ClassOfIsomorphicFunctionalMapping

A ClassOfIsomorphicFunctionalMapping is a ClassOfFunctionalMapping that is isomorphic.

EXAMPLE - The natural logarithm function is a ClassOfIsomorphicFunctionalMapping.

EXPRESS specification

ENTITY class_of_isomorphic_functional_mapping  
    SUPERTYPE OF (ONEOF(scale, class_of_scale_conversion))  
    SUBTYPE OF (class_of_functional_mapping);  
END_ENTITY;  

ClassOfLeftNamespace

A ClassOfLeftNamespace is a ClassOfNamespace that indicates that the class_of_part is the left namespace for the members of the class_of_class_of_whole.

EXAMPLE - WC1: is the ClassOfLeftNamespace for customer site identifiers for Water Company 1.

EXPRESS specification

ENTITY class_of_left_namespace  
    SUBTYPE OF (class_of_namespace); 
END_ENTITY; 

ClassOfLifecycleStage

A ClassOfLifecycleStage is a ClassOfRelationship whose members are members of LifecycleStage

EXAMPLE - Planned, required, expected, and proposed can be represented by instances of ClassOfLifecycleStage.

EXPRESS specification

ENTITY class_of_lifecycle_stage  
    SUBTYPE OF (class_of_relationship); 
END_ENTITY; 

ClassOfMolecule

A ClassOfMolecule is a ClassOfArrangedIndividual whose members are molecules.

EXAMPLE - H2O, H2SO4, and DNA can be represented by instances of ClassOfMolecule.

EXPRESS specification

ENTITY class_of_molecule 
    SUBTYPE OF (class_of_arranged_individual); 
END_ENTITY; 

ClassOfMultidimensionalObject

A ClassOfMultidimensionalObject is a Class whose members are instances of MultidimensionalObject. The role played by each position in the classified MultidimensionalObject is specified at the same position in the <roles> attribute. Constant values that apply to any position in <roles> are specified in the same position in the <parameters> attribute. The cardinalities for the roles attribute are specified by the same position in the cardinalities attribute.

EXAMPLE - The definition of the input to a function y = a + bx to convert Celsius to Fahrenheit with roles [a, b, x] defining the input MultidimensionalObject, and parameters [32,1.8] with parameter_position list [1,2] is an example of a ClassOfMultidimensionalObject.

EXPRESS specification

ENTITY class_of_multidimensional_object  
    SUBTYPE OF (class_of_abstract_object);  
    cardinalities	: OPTIONAL LIST [1:?] OF cardinality; 
    optional_element	: LIST [1:?] OF BOOLEAN; 
    parameters		: OPTIONAL LIST [1:?] OF thing;  
    parameter_position	: OPTIONAL LIST [1:?] OF INTEGER;  
    roles		: LIST [1:?] OF role_and_domain;  
END_ENTITY; 

ClassOfNamespace

A ClassOfNamespace is a ClassOfClassOfRelationship that indicates that a ClassOfInformationRepresentation is the class_of_part used as a namespace for each member of a ClassOfClassOfInformationRepresentation that is the class_of_class_of_whole.

EXAMPLE - WC1: is used as the name space for a set of water company identifiers.

EXPRESS specification

ENTITY class_of_namespace  
    SUPERTYPE OF  (ONEOF(class_of_left_namespace, class_of_right_namespace)) 
    SUBTYPE OF (class_of_class_of_relationship);  
    class_of_class_of_whole   :   class_of_class_of_information_representation;  
    class_of_part : class_of_information_representation; 
END_ENTITY;

ClassOfNumber

A ClassOfNumber is a ClassOfClass whose members are members of ArithmeticNumber.

EXAMPLE -The class of prime numbers can be represented by an instance ClassOfNumber.

EXPRESS specification

ENTITY class_of_number 
    SUPERTYPE OF (ONEOF(number_space, enumerated_number_set))  
    SUBTYPE OF (class_of_class);  
END_ENTITY;  

ClassOfOrganism

A ClassOfOrganism is a ClassOfArrangedIndividual whose members are living organisms.

EXAMPLE - Human being, sheep, earthworm, oak tree, and bacteria are instances of ClassOfOrganism.

EXPRESS specification

ENTITY class_of_organism  
    SUBTYPE OF (class_of_arranged_individual); 
END_ENTITY; 

ClassOfOrganization

A ClassOfOrganization is a ClassOfArrangedIndividual whose members are instances of PhysicalObject that are composed of temporal parts of people and other assets, and are organised with a particular purpose.

EXAMPLE - Company, government, and project team can be represented by instances of ClassOfOrganization.

EXPRESS specification

ENTITY class_of_organization  
    SUBTYPE OF (class_of_arranged_individual);  
END_ENTITY; 

ClassOfParticipation

A ClassOfParticipation is a ClassOfCompositionOfIndividual that indicates a member of an instance of ParticipatingRoleAndDomain participates in a member of an instance of ClassOfActivity.

EXAMPLE - "Conductor of a musical performance" is an example of ClassOfParticipation.

EXPRESS specification

ENTITY class_of_participation  
    SUBTYPE OF (class_of_composition_of_individual);  
    SELF\class_of_composition_of_individual.class_of_part 	: participating_role_and_domain;  
    SELF\class_of_composition_of_individual.class_of_whole 	: class_of_activity; 
END_ENTITY; 

ClassOfParticulateMaterial

A ClassOfParticulateMaterial is a ClassOfArrangedIndividual whose members are arranged amounts of super-molecular sized objects of the same or different types.

EXAMPLE - Pile of sand, sand and cement mix, bag of bolts, catalyst fill for a reactor are examples of ClassOfParticulateMaterial.

EXPRESS specification

ENTITY class_of_particulate_material  
    SUBTYPE OF (class_of_arranged_individual); 
END_ENTITY; 

ClassOfPeriodInTime

A ClassOfPeriodInTime is a ClassOfIndividual whose members are instances of PeriodInTime.

EXAMPLE - Monday and June are examples of ClassOfPeriodInTime.

EXPRESS specification

ENTITY class_of_period_in_time  
    SUBTYPE OF (class_of_individual);  
END_ENTITY;  

ClassOfPerson

A ClassOfPerson is a ClassOfOrganism whose members are people.

EXAMPLE - Engineer, plant manager, student, male, female, senior citizen, adult, girl, and boy can be represented by instances of ClassOfPerson. Engineer, plant manager, and student are also instances of ClassOfFunctionalObject.

EXPRESS specification

ENTITY class_of_person  
    SUBTYPE OF (class_of_organism);  
END_ENTITY;  

ClassOfPointInTime

A ClassOfPointInTime is a ClassOfEvent whose members are members of PointInTime.

EXAMPLE - Midnight is a ClassOfPointInTime.

EXPRESS specification

ENTITY class_of_point_in_time 
    SUBTYPE OF (class_of_event);  
END_ENTITY; 

ClassOfPossibleRoleAndDomain

A ClassOfPossibleRoleAndDomain is a ClassOfRelationship that indicates the RoleAndDomain that can be played by a member of the ClassOfIndividual, in some Activity.

EXAMPLE - Pumps can play the role of anchor (although they are not intended to do so).

EXPRESS specification

ENTITY class_of_possible_role_and_domain  
    SUBTYPE OF (class_of_relationship);  
    class_of_player   :   class_of_individual;  
    played : role_and_domain; 
END_ENTITY;  

ClassOfProperty

A ClassOfProperty is a ClassOfClassOfIndividual whose members are instances of Property.

EXAMPLE - 'Temperature' is an example of ClassOfProperty.

EXPRESS specification

ENTITY class_of_property  
    SUPERTYPE OF (ONEOF(property_space, enumerated_property_set))  
    SUBTYPE OF (class_of_class_of_individual);  
END_ENTITY;  

ClassOfPropertySpace

A ClassOfPropertySpace is a ClassOfClass whose members are members of PropertySpace.

EXAMPLE 1 - Property curves, property areas, and property volumes of various dimensionality and degrees of freedom are members of ClassOfPropertySpace.
EXAMPLE 2 - Pump performance curve is an example of ClassOfPropertySpace.

EXPRESS specification

ENTITY class_of_property_space  
    SUBTYPE OF (class_of_class);  
END_ENTITY; 

ClassOfRecognition

A ClassOfRecognition is a ClassOfRelationship that indicates that a member of a ClassOfActivity may result in the recognition of a member of a Class.

EXAMPLE - A measurement activity may result in the recognition of the Classification of a PossibleIndividual by a Property.

EXPRESS specification

ENTITY class_of_recognition  
    SUBTYPE OF (class_of_relationship);  
    class_of_recognized    :   class;  
    class_of_recognizing   :   class_of_activity; 
END_ENTITY;

ClassOfRelationship

A ClassOfRelationship is a ClassOfAbstractObject whose members are members of Relationship.

EXPRESS specification

ENTITY class_of_relationship
    SUPERTYPE OF  (ONEOF(
	class_of_approval,
	class_of_approval_by_status,
	class_of_assertion,
	class_of_cause_of_beginning_of_class_of_individual,
	class_of_cause_of_ending_of_class_of_individual,
	class_of_classification,
	class_of_composition_of_individual,
	class_of_connection_of_individual,
	class_of_functional_mapping, 
	class_of_indirect_property,
	class_of_individual_used_in_connection,
	class_of_intended_role_and_domain, 
	class_of_involvement_by_reference,
	class_of_lifecycle_stage,
	class_of_possible_role_and_domain, 
	class_of_recognition,
	class_of_relationship_with_signature, 
	class_of_relative_location,
	class_of_representation_of_thing, 
	class_of_representation_translation, 
	class_of_responsibility_for_representation, 
	class_of_specialization,
	class_of_temporal_sequence,
	class_of_usage_of_representation,
	dimension_of_individual,
	property_for_shape_dimension) 
	ANDOR ONEOF(class_of_relationship_with_related_end_1, class_of_relationship_with_related_end_2))  
    SUBTYPE OF (class_of_abstract_object);
    end_1_cardinality   :   OPTIONAL cardinality;
    end_2_cardinality   :   OPTIONAL cardinality; 
END_ENTITY; 

ClassOfRelationshipWithRelatedEnd1

A ClassOfRelationshipWithRelatedEnd1 is a ClassOfRelationship where a particular Thing is related in the ClassOfRelationship, rather than the members of a Class. The related Thing plays the RoleAndDomain indicated by the class_of_end_1 attribute.

EXAMPLE - Products manufactured by Bloggs & Co is a ClassOfRelationshipWithRelatedEnd1 that points to Bloggs & Co as the related Thing.

EXPRESS specification

ENTITY class_of_relationship_with_related_end_1  
    SUBTYPE OF (class_of_relationship);  
    related   :  thing;   
END_ENTITY;  

ClassOfRelationshipWithRelatedEnd2

A ClassOfRelationshipWithRelatedEnd2 is a ClassOfRelationship where a particular Thing is related in the ClassOfRelationship, rather than the members of a Class. The related Thing plays the RoleAndDomain indicated by the class_of_end_2 attribute.

EXAMPLE - Possession of welding skills by John Doe is an example of ClassOfRelationshipWithRelatedEnd2, where John Doe is the related Thing.

EXPRESS specification

ENTITY class_of_relationship_with_related_end_2  
    SUBTYPE OF (class_of_relationship);  
    related   :   thing;   
END_ENTITY;  

ClassOfRelationshipWithSignature

A ClassOfRelationshipWithSignature is a ClassOfRelationship that may have a RoleAndDomain specified for each end. NOTE - A ClassOfRelationshipWithSignature is analogous to a simple EXPRESS attribute and its inverse. More complex objects can be modelled with MultidimensionalObject and ClassOfMultidimensionalObject.

EXAMPLE - 'Married' is a ClassOfRelationshipWithSignature where class_of_end_1 is the RoleAndDomain 'husband and man', and class_of_end_2 the RoleAndDomain 'wife and woman'.

EXPRESS specification

ENTITY class_of_relationship_with_signature  
    SUBTYPE OF (class_of_relationship, relationship);  
    class_of_end_1   :   OPTIONAL role_and_domain; 
    class_of_end_2   :   OPTIONAL role_and_domain;  
END_ENTITY;  

ClassOfRelativeLocation

A ClassOfRelativeLocation is a ClassOfRelationship whose members are instances of RelativeLocation.

EXAMPLE - Beside, above, and below are examples of ClassOfRelativeLocation.

EXPRESS specification

ENTITY class_of_relative_location  
    SUBTYPE OF (class_of_relationship);  
    class_of_located   :   class_of_individual;  
    class_of_locator   :   class_of_individual;   
END_ENTITY;  

ClassOfRepresentationOfThing

A ClassOfRepresentationOfThing is a ClassOfRelationship that indicates that all members of the pattern ClassOfInformationRepresentation represent the Thing.

EXAMPLE - The ClassOfRelationship that indicates that occurrences of the pattern denoted by 'London' represent the concept of the capital of the United Kingdom can be represented by an instance of ClassOfRepresentationOfThing.

EXPRESS specification

ENTITY class_of_representation_of_thing  
    SUBTYPE OF (class_of_relationship);  
    pattern       :   class_of_information_representation;  
    represented   :   thing;   
END_ENTITY;  

ClassOfRepresentationTranslation

A ClassOfRepresentationTranslation is a ClassOfRelationship that indicates the translation of two instances of ClassOfInformationRepresentation.

EXAMPLE - The link that indicates that the representations 'F' and '15' are equivalent (concept of fifteen in hexadecimal and octal respectively) can be represented by an instance of ClassOfRepresentationTranslation.

EXPRESS specification

ENTITY class_of_representation_translation  
    SUBTYPE OF (class_of_relationship);  
    class_of_first    :   class_of_information_representation; 
    class_of_second   :   class_of_information_representation;   
END_ENTITY;  

ClassOfResponsibilityForRepresentation

A ClassOfResponsibilityForRepresentation is a ClassOfRelationship whose members indicate that a PossibleIndividual (usually an organization) deems that members of the pattern can be used as representations of the represented thing.

EXAMPLE - The link between the identification of pump #1234 and the XYZ Corporation, that indicates that the XYZ Corporation controls this identification, can be represented by an instance of ClassOfResponsibilityForRepresentation.

EXPRESS specification

ENTITY class_of_responsibility_for_representation  
    SUBTYPE OF (class_of_relationship);  
    class_of_controlled   :   class_of_representation_of_thing;  
    controller : possible_individual;   
END_ENTITY; 

ClassOfRightNamespace

A ClassOfRightNamespace is a ClassOfNamespace where the class_of_part is the namespace for the members of the class_of_class_of_whole.

EXPRESS specification

ENTITY class_of_right_namespace 
    SUBTYPE OF (class_of_namespace);  
END_ENTITY; 

ClassOfScale

A ClassOfScale is a ClassOfClassOfRelationship whose members are instances of Scale.

EXAMPLE - SI Unit.

EXPRESS specification

ENTITY class_of_scale  
    SUBTYPE OF (class_of_class_of_relationship);  
END_ENTITY;  

ClassOfScaleConversion

A ClassOfScaleConversion is a ClassOfIsomorphicFunctionalMapping that defines a conversion between two different scales of units used for the quantification of properties.

EXAMPLE - The Fahrenheit scale for temperature and the Celsius scale for temperature can each be represented by instances of Scale. The conversion between these scales can be represented by an instance of ClassOfScaleConversion.

EXPRESS specification

ENTITY class_of_scale_conversion  
    SUBTYPE OF (class_of_isomorphic_functional_mapping);  
    SELF\class_of_functional_mapping.codomain   :   scale;  
    SELF\class_of_functional_mapping.domain     :   scale;   
END_ENTITY;  

ClassOfShape

A ClassOfShape is a PropertySpace that has instances of Shape as its members.

EXAMPLE - Regular geometric forms such as line, circle, square, cylinder, sphere, and cone can be represented by instances of ClassOfShape.

EXPRESS specification

ENTITY class_of_shape  
    SUBTYPE OF (property_space);  
END_ENTITY;  

ClassOfShapeDimension

ENTITY class_of_shape_dimension  
    SUBTYPE OF (class_of_class);  
END_ENTITY; 

ClassOfSpecialization

A ClassOfSpecialization is a ClassOfRelationship whose members are instances of Specialization. It indicates that a member of the class_of_subclass is a subclass of a member of the class_of_superclass.

EXAMPLE - The ClassOfSpecialization that indicates that members of the class "family of ASME bolts", e.g. 3 inch, 2 inch bolts, are specializations of members of the EnumeratedPropertySet "set of bolt lengths", e.g. 3 inch, 2 inch.

EXPRESS specification

ENTITY class_of_specialization 
    SUBTYPE OF (class_of_relationship); 
    class_of_subclass     :   class_of_class;  
    class_of_superclass   :   class_of_class;   
END_ENTITY;  

ClassOfStatus

A ClassOfStatus is a ClassOfClassOfIndividual whose members are a Status.

EXAMPLE - An example of ClassOfStatus is 'approval status', with members: not assessed, approved, rejected.

EXPRESS specification

ENTITY class_of_status  
    SUBTYPE OF (class_of_class_of_individual);  
END_ENTITY;  

ClassOfSubAtomicParticle

A ClassOfSubAtomicParticle is a ClassOfArrangedIndividual whose members are constituent particles of atoms.

EXAMPLE - Proton, electron, meson, neutron, positron, muon, quark, and neutrino can be represented by instances of ClassOfSubAtomicParticle.

EXPRESS specification

ENTITY class_of_sub_atomic_particle  
    SUBTYPE OF (class_of_arranged_individual);  
END_ENTITY;  

ClassOfTemporalSequence

A ClassOfTemporalSequence is a ClassOfRelationship where the sequence is of a temporal nature.

EXAMPLE 1 - The link that indicates that members of July follow members of June can be represented by an instance of ClassOfTemporalSequence.
EXAMPLE 2 - The link that indicates that emptying activities for a tank precede cleaning activities can be represented by an instance of ClassOfTemporalSequence.

EXPRESS specification

ENTITY class_of_temporal_sequence  
    SUBTYPE OF (class_of_relationship);  
    class_of_predecessor   :   class_of_individual;  
    class_of_successor     :   class_of_individual;  
END_ENTITY;  

ClassOfTemporalWholePart

A ClassOfTemporalWholePart is a ClassOfCompositionOfIndividual whose members are members of TemporalWholePart.

EXAMPLE - The class that indicates that Crude Distillation Units may have a maximum naphtha mode can be represented by an instance of ClassOfTemporalWholePart.

EXPRESS specification

ENTITY class_of_temporal_whole_part  
    SUBTYPE OF (class_of_composition_of_individual);  
END_ENTITY; 

ClassOfUsageOfRepresentation

A ClassOfUsageOfRepresentation is a ClassOfRelationship whose members indicate that a PossibleIndividual (usually an organization) reads or otherwise uses members of the pattern as a representation of the represented thing.

EXAMPLE - The link between the identification of pump #1234 and contractor ABC Ltd, that indicates that ABC Ltd uses this identification can be represented by a class of ClassOfUsageOfRepresentation.

EXPRESS specification

ENTITY class_of_usage_of_representation  
    SUBTYPE OF (class_of_relationship);  
    class_of_used   :   class_of_representation_of_thing;  
    user :   possible_individual;  
END_ENTITY;  

ComparisonOfProperty

A ComparisonOfProperty is a Relationship that indicates the magnitude of one Property is greater than that of another.

EXAMPLE - That the temperature in a room is less than that in a furnace can be indicated by an instance of ComparisonOfProperty.

EXPRESS specification

ENTITY comparison_of_property  
    SUBTYPE OF (relationship);  
    greater_element   :   property;  
    lesser_element    :   property;  
END_ENTITY;  

CompositionOfIndividual

A CompositionOfIndividual is a Relationship that indicates that the part PossibleIndividual is a part of the whole PossibleIndividual. A simple composition is indicated, unless a subtype is instantiated too. CompositionOfIndividual is transitive.

NOTE - Simple composition means that for example no arrangement of parts is necessarily implied or of concern. Where there is an arrangement of parts, this is indicated by an ArrangementOfIndividual, which, by being a subtype, implies also a simple composition.

EXAMPLE - A grain of sand being part of a pile of sand is an example of CompositionOfIndividual.

EXPRESS specification

ENTITY composition_of_individual  
    SUPERTYPE OF (ONEOF( 
	arrangement_of_individual, 
	participation, 
	temporal_whole_part, 
	temporal_bounding))  
    SUBTYPE OF (relationship);  
    part		:   possible_individual;  
    whole	:   possible_individual;   
END_ENTITY;  

ConnectionOfIndividual

A ConnectionOfIndividual is a Relationship that indicates that matter, energy, or both can be transferred between the members of PossibleIndividual that are connected, either directly or indirectly.

NOTE - There is no significance to the ordering of the two related instances of PossibleIndividual. The names side_1 and side_2 serve only to distinguish the attributes.

EXPRESS specification

ENTITY connection_of_individual  
    SUPERTYPE OF (ONEOF(direct_connection, indirect_connection))  
    SUBTYPE OF (relationship);  
    side_1   :   possible_individual;  
    side_2   :   possible_individual;  
END_ENTITY;  

ContainmentOfIndividual

A ContainmentOfIndividual is a RelativeLocation where the 'located' PossibleIndividual is contained by the 'locator' PossibleIndividual but is not part of it.

EXAMPLE - The contents of a vessel being inside the vessel can be represented by an instance of ContainmentOfIndividual.

NOTE - Containment is distinct from composition; in composition the whole consists of all of its part, with containment, what is contained is not a part of the container.

EXPRESS specification

ENTITY containment_of_individual  
    SUBTYPE OF (relative_location);  
END_ENTITY;  

CoordinateSystem

A CoordinateSystem is a MultidimensionalScale for locating and relating a PossibleIndividual in an n-dimensional space in which arbitrary geometric transformations are valid.

EXAMPLE - The XYZ site coordinate system, is an example of a CoordinateSystem.

EXPRESS specification

ENTITY coordinate_system 
    SUBTYPE OF (multidimensional_scale); 
END_ENTITY;  

CrystallineStructure

A CrystallineStructure is a ClassOfArrangedIndividual that is a form in which many simple elements and their natural compounds regularly aggregate by the operation of natural affinity: it has a definite internal structure, with the external form of a solid enclosed by a number of symmetrically arranged plane faces, and varying in simplicity from the cube to much more complicated geometric bodies.

EXAMPLE - Ferritic, martensitic, and austenitic are examples of CrystallineStructure.

EXPRESS specification

ENTITY crystalline_structure  
    SUBTYPE OF (class_of_arranged_individual); 
END_ENTITY;  

Definition

A Definition is a RepresentationOfThing that indicates that the Class is defined by the sign PossibleIndividual.

EXAMPLE - The Relationship between this copy of the preceding sentence and the heading before that is a Definition.

EXPRESS specification

ENTITY definition  
    SUBTYPE OF (representation_of_thing);  
    SELF\representation_of_thing.represented   :   class;   
END_ENTITY;  

Description

A Description is a RepresentationOfThing that indicates that the PossibleIndividual describes the <thing>.

EXAMPLE - A copy of the Piping and Instrumentation Diagram for Crude Distillation Unit 1 at refinery X has a Description relationship with the plant.

EXPRESS specification

ENTITY description  
    SUBTYPE OF (representation_of_thing); 
END_ENTITY; 

DifferenceOfSetOfClass

A DifferenceOfSetOfClass is a FunctionalMapping that indicates that the membership of the result Class is the difference between the membership of the union of the classes that are members of the EnumeratedSetOfClass and their intersection.

NOTE - When the EnumeratedSetOfClass consists of a Class and another Class that is a subclass of the first class, then the difference is the complement of the subclass.

EXAMPLE - The difference of the EnumeratedSetOfClass {{A,B,C},{B,C,D},{C,D,E}} is {A,B,D,E}.

EXPRESS specification

ENTITY difference_of_set_of_class  
    SUBTYPE OF (functional_mapping);  
    SELF\functional_mapping.input    :   enumerated_set_of_class;  
    SELF\functional_mapping.result   :   class;  
END_ENTITY;  

DimensionOfIndividual

A DimensionOfIndividual is a ClassOfRelationship that indicates that each member of the set of lines that are the IndividualDimension are a dimension of the PossibleIndividual.

EXAMPLE - The set of all lines that pass through the centre of a particular circle and end at the circumference of that circle, are a dimension (diameter) of that circle. The particular dimension is indicated by the DimensionOfShape that classifies the DimensionOfIndividual.

EXPRESS specification

ENTITY dimension_of_individual  
    SUBTYPE OF (class_of_relationship);  
    individual : possible_individual;  
    individual_dimension : individual_dimension;  
END_ENTITY;  

DimensionOfShape

A DimensionOfShape is a ClassOfClassOfRelationship that indicates that members of the ShapeDimension are dimensions of the Shape members.

EXAMPLE - The sets of 10m lines that are diameters of 10m circles is an example of DimensionOfShape.

EXPRESS specification

ENTITY dimension_of_shape  
    SUBTYPE OF (class_of_class_of_relationship);
    dimension   :   shape_dimension;  
    shape       :   shape; 
END_ENTITY;  

DirectConnection

A DirectConnection is a ConnectionOfIndividual that indicates that the side_1 and side_2 are directly connected via a common spatial boundary.

EXAMPLE - The relation that indicates that the plug terminating a serial communications cable is connected to the socket on a piece of computer equipment can be represented by an instance of of DirectConnection.

EXPRESS specification

ENTITY direct_connection  
    SUBTYPE OF (connection_of_individual); 
END_ENTITY;  

DocumentDefinition

A DocumentDefinition is a ClassOfClassOfInformationRepresentation that defines the content and/or structure of documents.

EXAMPLE - XYZ Corp. Material Safety Data Sheet is a DocumentDefinition.

EXPRESS specification

ENTITY document_definition  

    SUBTYPE OF (class_of_class_of_information_representation);  

END_ENTITY;  

Ending

An Ending is a TemporalBounding that marks the end of a PossibleIndividual .

EXAMPLE 1 - The relation that indicates that the PointInTime known as 0000hrs 1st July 1999 GMT is the end of the PeriodInTime known as June 1999 GMT can be represented by an instance of Ending.
EXAMPLE 2 - The relation that indicates that the Event 'loading complete' marks the end of the PossibleIndividual 'loading plant operating period 1' (a temporal part of the loading plant) is an instance of Ending.

EXPRESS specification

ENTITY ending 
    SUBTYPE OF (temporal_bounding);  
END_ENTITY;  

EnumeratedNumberSet

An EnumeratedNumberSet is a ClassOfNumber and an EnumeratedSetOfClass.

EXAMPLE - The set of integer numbers {3,4,5} can be represented by an instance of EnumeratedNumberSet.

EXPRESS specification

ENTITY enumerated_number_set  
    SUBTYPE OF (class_of_number, enumerated_set_of_class);  
END_ENTITY;  

EnumeratedPropertySet

An EnumeratedPropertySet is a ClassOfProperty and an EnumeratedSetOfClass whose members are an enumerated set of properties of the same SinglePropertyDimension or MultidimensionalPropertySpace.

EXAMPLE - {115 Volt, 240 Volt} is an example of an EnumeratedPropertySet.

EXPRESS specification

ENTITY enumerated_property_set  
    SUBTYPE OF (class_of_property, enumerated_set_of_class);  
END_ENTITY;  

EnumeratedSetOfClass

An EnumeratedSetOfClass is a ClassOfClass that is an enumerated set of the instances of Class. Enumerated means that the full set of members is specified.

EXAMPLE - {Plastic, 1.2kg, frame} is an EnumeratedSetOfClass. More generally {{A,B,C},{B,C,D},{C,D,E}} is an EnumeratedSetOfClass. Also "electrical engineering classes for ERDL V1.1" is an EnumeratedSetOfClass.

EXPRESS specification

ENTITY enumerated_set_of_class  
    SUBTYPE OF (class_of_class); 
END_ENTITY;  

Event

An Event is a PossibleIndividual with zero extent in time. An Event is the temporal boundary of one or more PossibleIndividuals, although there may be no knowledge of these PossibleIndividuals.

EXAMPLE - The connection of power to a pump is an Event that marks the beginning of a temporal part of that pump.

EXPRESS specification

ENTITY event  

    SUBTYPE OF (possible_individual);  

END_ENTITY;  

ExpressBinary

An ExpressBinary is a ClassOfExpressInformationRepresentation that represents a binary value as defined in ISO 10303-11:1994, 8.1.7.

NOTE - The UNIQUE rule ensures that any value is only held once.

EXPRESS specification

ENTITY EXPRESS_binary  
   SUBTYPE OF (class_of_EXPRESS_information_representation);  
    content  :   BINARY;  
    UNIQUE  
    rule_1   :   content;  
END_ENTITY;  

ExpressBoolean

An ExpressBoolean is a ClassOfExpressInformationRepresentation that represents a Boolean value as defined in ISO 10303-11:1994, 8.1.5.

NOTE - The UNIQUE rule ensures that any value is only held once.

EXPRESS specification

ENTITY EXPRESS_Boolean  
    SUBTYPE OF (class_of_EXPRESS_information_representation);  
    content  :   BOOLEAN;  
    UNIQUE  
    rule_1   :   content;  
END_ENTITY; 

ExpressInteger

An ExpressInteger is a ClassOfExpressInformationRepresentation that represents an integer number as defined in ISO 10303-11:1994, 8.1.3.

NOTE - The UNIQUE rule ensures that any value is only held once.

EXPRESS specification

ENTITY EXPRESS_integer  
    SUBTYPE OF (class_of_EXPRESS_information_representation); 
    content  :   INTEGER; 
    UNIQUE  
    rule_1   :   content;  
END_ENTITY;  

ExpressLogical

An ExpressLogical is a ClassOfExpressInformationRepresentation that represents a logical value as defined in ISO 10303-11:1994, 8.1.4.

NOTE - The UNIQUE rule ensures that any value is only held once.

EXPRESS specification

ENTITY EXPRESS_logical  
    SUBTYPE OF (class_of_EXPRESS_information_representation);  
    content  :   LOGICAL; 
    UNIQUE 
    rule_1   :   content;  
END_ENTITY; 

ExpressReal

An ExpressReal is a ClassOfExpressInformationRepresentation that represents a real number as defined in ISO 10303-11:1994, 8.1.2.

NOTE The UNIQUE rule ensures that any value is only held once.

EXPRESS specification

ENTITY EXPRESS_real  
    SUBTYPE OF (class_of_EXPRESS_information_representation);  
    content  :   REAL;  
    UNIQUE  >
    rule_1   :   content;  
END_ENTITY;  

ExpressString

An ExpressString is a ClassOfExpressInformationRepresentation that represents a string as defined in ISO 10303-11:1994, 8.1.6.

NOTE - The UNIQUE rule ensures that any value is only held once.

EXPRESS specification

ENTITY EXPRESS_string  
    SUBTYPE OF (class_of_EXPRESS_information_representation);  
    content  :   STRING;  
    UNIQUE  
    rule_1   :   content;  
END_ENTITY;  

FeatureWholePart

A FeatureWholePart is an ArrangementOfIndividual that indicates that the part is a non-separable, contiguous part of the whole.

NOTE - This includes wholes that cannot be non-destructively disassembled and reassembled such as the cast inlet flange of a pump.

EXAMPLE - The relation that indicates that a flange face is part of a flange can be represented by an instance of FeatureWholePart.

EXPRESS specification

ENTITY feature_whole_part 
    SUBTYPE OF (arrangement_of_individual);  
END_ENTITY;  

FunctionalMapping

A FunctionalMapping is a Relationship that indicates that the input gave the result as determined by the classifying ClassOfFunctionalMapping.

EXAMPLE - The mapping of [5, 3] to 2, classified by the minus function is an example of FunctionalMapping.

EXPRESS specification

ENTITY functional_mapping  
    SUBTYPE OF (relationship);  
    input    :   thing;  
    result   :   thing;  
END_ENTITY;  

FunctionalPhysicalObject

A FunctionalPhysicalObject is a PhysicalObject that has functional, rather than material, continuity as its basis for identity. Adjacent temporal parts of a FunctionalPhysicalObject need not have common matter or energy, provided the matter or energy of each temporal part fulfils the same function.

EXAMPLE - The heat exchanger system known as tag E-4507, which is part of a distillate transfer system, can be represented by an instance of FunctionalPhysicalObject. Note that this is distinct from the "shell and tube heat exchanger manufacture number ES/1234" that was installed as E-4507 when the plant was first built and later removed when worn out, to be replaced by a new heat exchanger with different serial number. "Shell and tube heat exchanger manufacture number ES/1234" and its differently numbered replacement can be represented by instances of MaterializedPhysicalObject. When ES/1234 is installed as E-4507 there is a temporal part of ES/1234 that is also a temporal part of E-4507.

EXPRESS specification

ENTITY functional_physical_object 
    SUBTYPE OF (physical_object);
END_ENTITY;  

Identification

An Identification is a RepresentationOfThing that indicates that the PossibleIndividual is an identifierfor the Thing identified.

EXAMPLE - 1 The relationship between the text "P101" on a printed copy of a pump data sheet and the applicable FunctionalPhysicalObject is an example of Identification.
EXPRESS specification

ENTITY identification  
    SUBTYPE OF (representation_of_thing);  
END_ENTITY;  

IndirectConnection

An IndirectConnection is a ConnectionOfIndividual that indicates that side_1 and side_2 are connected via other individuals.

EXAMPLE - The relation that indicates that there is a railway connection between the cities of London and Paris can be represented by an instance of IndirectConnection.

EXPRESS specification

ENTITY indirect_connection 
    SUBTYPE OF (connection_of_individual); 
END_ENTITY;  

IndirectProperty

An IndirectProperty is a Relationship between a Property and a PossibleIndividual . The nature of the IndirectProperty is defined by its classification by a ClassOfIndirectProperty. A property is indirect when it does not directly apply to the PossibleIndividual it applies to, but is derived from some process.

NOTE - A property is indirect because it does not directly apply. There can only be one temperature that a thing has (at a time), so a Maximum Allowable Working Temperature is not its temperature, but an indirect property derived from doing some tests or calculations to determine its value (as opposed to it being a current measurement). This is what makes it indirect.

EXAMPLE - A Maximum Allowable Working Pressure of 50 BarA for V101 is specified by an IndirectProperty between the pressure of 50 BarA and V101, classified by the ClassOfIndirectProperty Maximum Allowable Working Pressure.

EXPRESS specification

ENTITY indirect_property 
    SUBTYPE OF (relationship); 
    possessor   :   possible_individual;  
    property    :   property;  
END_ENTITY;  

IndividualDimension

An IndividualDimension is a ClassOfIndividual whose members characterize a particular PossibleIndividual.

EXAMPLE - The set of lines that are each a diameter of a particular circle.

EXPRESS specification

ENTITY individual_dimension  
    SUBTYPE OF (class_of_individual);  
END_ENTITY; 

IndividualUsedInConnection

An IndividualUsedInConnection is a Relationship that indicates that a PossibleIndividual is used in a ConnectionOfIndividual.

EXAMPLE - The Relationship between the connection of the flanged ends of two pipes and a temporal part of the bolts, nuts, washers and gasket set that indicates that the bolt and gasket set participates in the connection can be represented by an instance of IndividualUsedInConnection.

EXPRESS specification

ENTITY individual_used_in_connection  
    SUBTYPE OF (relationship);  
    connection   :   connection_of_individual; 
    usage        :   possible_individual;  
END_ENTITY;  

IntegerNumber

An IntegerNumber is an ArithmeticNumber that is an integer number.

EXAMPLE - 1, 2, and 10 are representations of integer numbers.

EXPRESS specification

ENTITY integer_number
    SUBTYPE OF (arithmetic_number); 
END_ENTITY;  

IntendedRoleAndDomain

An IntendedRoleAndDomain is a Relationship that indicates the RoleAndDomain some temporal part of the PossibleIndividual is intended to take with respect to some Activity.

EXAMPLE - Some PossibleIndividual that is classified as a pump is intended to play the RoleAndDomain of a performer in some pumping activity.

EXPRESS specification

ENTITY intended_role_and_domain 
    SUBTYPE OF (relationship);  
    played   :   role_and_domain;  
    player   :   possible_individual;  
END_ENTITY;  

IntersectionOfSetOfClass

An IntersectionOfSetOfClass is a FunctionalMapping that indicates that the result Class consists of those members of the members of the classes EnumeratedSetOfClass that are common to each class.

EXAMPLE - The intersection of the EnumeratedSetOfClass {{A,B,C},{B,C,D},{C,D,E}} is {C}.

EXPRESS specification

ENTITY intersection_of_set_of_class  
    SUBTYPE OF (functional_mapping);  
    SELF\functional_mapping.input   :   enumerated_set_of_class;  
    SELF\functional_mapping.result  :   class;  
END_ENTITY; 

InvolvementByReference

An InvolvementByReference is a Relationship that indicates that a Thing is referred to in an Activity.

NOTE - This entity type is for involvements that are not direct Participation of a PossibleIndividual, such as involvement of a class, or of a historical or future temporal part of a PossibleIndividual.

EXAMPLE - A conversation that refers to the Roman Empire is an Activity that relates to the Roman Empire by an InvolvementByReference.

EXPRESS specification

ENTITY involvement_by_reference
    SUBTYPE OF (relationship);  
    involved   :   thing;  
    involver   :   activity;  
END_ENTITY;  

Language

A Language is a ClassOfClassOfInformationRepresentation whose members are all the information representations made in the language.

EXAMPLE - English, French, C++ and Java can be represented by instances of Language.

EXPRESS specification

ENTITY language  
    SUBTYPE OF (class_of_class_of_information_representation);  
END_ENTITY; 

LeftNamespace

A LeftNamespace is a Namespace where the <class_of_part> is the left part of the <class_of_whole>.

EXAMPLE - Where WC1: is the Namespace in WC1:1234, it is a LeftNamespace.

EXPRESS specification

ENTITY left_namespace  
    SUBTYPE OF (namespace);  
END_ENTITY; 

LifecycleStage

A LifecycleStage is a Relationship that indicates the interest that a PossibleIndividual has in some PossibleIndividual.

EXAMPLE - The relation that links a possible building to a temporal part of the XYZ Corp. can be represented by an instance of LifecycleStage. The nature of that LifecycleStage (e.g. 'planned') can be expressed by classifying with the applicable ClassOfLifecycleStage.

EXPRESS specification

ENTITY lifecycle_stage 
    SUBTYPE OF (relationship);  
    interest     :   possible_individual;  
    interested   :   possible_individual;  
END_ENTITY;  

LowerBoundOfNumberRange

A LowerBoundOfNumberRange is a Classification that indicates an ArithmeticNumber is the lowest value in a NumberRange.

EXAMPLE - 3.1 is the lower bound of the range [3.1 to 5.3].

EXPRESS specification

ENTITY lower_bound_of_number_range  
    SUBTYPE OF (classification);  
    SELF\classification.classified   :   arithmetic_number; 
    SELF\classification.classifier   :   number_range;  
END_ENTITY; 

LowerBoundOfPropertyRange

A LowerBoundOfPropertyRange is a Classification that indicates that a Property is the lower bound of a PropertyRange.

EXAMPLE - -10 Celsius is the lower bound of the range -10 to +20 Celsius.

EXPRESS specification

ENTITY lower_bound_of_property_range  
    SUBTYPE OF (classification);  
    SELF\classification.classified   :   property; 
    SELF\classification.classifier   :   property_range;  
END_ENTITY;  

MaterializedPhysicalObject

A MaterializedPhysicalObject is a PhysicalObject that has matter and/or energy continuity as its basis for identity. Matter or energy continuity requires some matter or energy to be common to adjacent temporal parts of the MaterializedPhysicalObject. Replacement of some components from time to time does not create a new identity.

EXAMPLE - The shell and tube heat exchanger with manufacturer's serial number ES/1234 can be represented by an instance of MaterializedPhysicalObject.

EXPRESS specification

ENTITY materialized_physical_object  
    SUBTYPE OF (physical_object);  
END_ENTITY;  

MultidimensionalNumber

A MultidimensionalNumber is an ArithmeticNumber that is also a MultidimensionalObject.

EXAMPLE - [3.2, 5.4, 55.6] is a MultidimensionalNumber.

EXPRESS specification

ENTITY multidimensional_number  
    SUBTYPE OF (arithmetic_number, multidimensional_object);  
END_ENTITY;  

MultidimensionalNumberSpace

A MultidimensionalNumberSpace is a NumberSpace and a MultidimensionalObject.

EXAMPLE - R3, the space defined as being all the triples of real numbers (e.g. <1.0, 2.1, 5.4>), is a MultidimensionalNumberSpace.

EXPRESS specification

ENTITY multidimensional_number_space  
    SUBTYPE OF (number_space, multidimensional_object);  
END_ENTITY;  

MultidimensionalObject

A MultidimensionalObject is an AbstractObject that is an ordered list of Thing. The significance of the MultidimensionalObject is determined by being a member of a ClassOfMultidimensionalObject that indicates the role played by each of its elements.

NOTE The MultidimensionalObject [A,B,C] is different from [B,C,A].

EXAMPLE - [32, 1.8, 20] is a MultidimensionalObject that may be specified to be the input parameters for the function y=a+bx to convert 20 Celsius to Fahrenheit.

EXPRESS specification

ENTITY multidimensional_object  
    SUPERTYPE OF (ONEOF(
	multidimensional_number,
	multidimensional_number_space,
	multidimensional_property, 
	multidimensional_property_space, 
	multidimensional_scale))
    SUBTYPE OF (abstract_object);  
    elements   :   LIST [1:?] OF thing; 
    position   :   OPTIONAL LIST [1:?] OF INTEGER;  
END_ENTITY; 

MultidimensionalProperty

A MultidimensionalProperty is a Property that is also a MultidimensionalObject.

EXAMPLE - A pump flow head characteristic is a multidimensional object. It consists of a continuum of Q, H property pairs, where Q is the flow rate and H is the flowing head difference. Each pair of properties Qa and Ha, where Qa is a particular flow rate and Ha a particular head, is a multidimensional property [Qa, Ha].

EXPRESS specification

ENTITY multidimensional_property  
    SUBTYPE OF (property, multidimensional_object);   
END_ENTITY; 

MultidimensionalPropertySpace

A MultidimensionalPropertySpace is a PropertySpace and a MultidimensionalObject whose members are properties each of which maps to more than one number. Each property will consist of elements of the same property dimensions.

EXAMPLE - A pump performance curve of flowrate and differential head is a MultidimensionalPropertySpace.

EXPRESS specification

ENTITY multidimensional_property_space 
    SUBTYPE OF (property_space, multidimensional_object); 
END_ENTITY;  

MultidimensionalScale

A MultidimensionalScale is a Scale that is also a MultidimensionalObject.

EXAMPLE - A [Celsius, seconds] scale is a MultidimensionalScale on which temperature variation over time can be plotted.

EXPRESS specification

ENTITY multidimensional_scale  
    SUBTYPE OF (scale, multidimensional_object);  
END_ENTITY; 

(ABS)Namespace

A Namespace is a ClassOfArrangementOfIndividual where the class_of_whole and class_of_part are members of ClassOfInformationRepresentation and the part is the most significant part of the whole that is the namespace.

EXAMPLE - The STRING WC1: is the Namespace in the identifier WC1:1234.

EXPRESS specification

ENTITY namespace  
    ABSTRACT SUPERTYPE OF (ONEOF(right_namespace, left_namespace))  
    SUBTYPE OF (class_of_arrangement_of_individual);  
    SELF\class_of_composition_of_individual.class_of_part    :   class_of_information_representation;
    SELF\class_of_arrangement_of_individual.class_of_whole   :   class_of_information_representation;  
END_ENTITY;  

NumberRange

A NumberRange is a one-dimensional NumberSpace.

EXAMPLE - The number space -273.1 to +infinity is a NumberRange.

> EXPRESS specification

ENTITY number_range  
    SUBTYPE OF (number_space); 
END_ENTITY;  

NumberSpace

A NumberSpace is a ClassOfNumber that is a continuum.

EXAMPLE - The integers from 1 to 5 and the reals from 0.000 to 1.000 are examples of NumberSpace.

EXPRESS specification

ENTITY number_space  
    SUPERTYPE OF (ONEOF(number_range, multidimensional_number_space)) 
    SUBTYPE OF (class_of_number);  
END_ENTITY; 

OtherRelationship

An OtherRelationship is a Relationship that is not a member of any of the other explicit subtypes of Relationship. The meaning of an OtherRelationship is specified by a classification by an instance of ClassOfRelationshipWithSignature.

EXAMPLE - The Relationship that indicates that a car is manufactured by Ford can be represented by an instance of OtherRelationship. The RoleAndDomain that classifies the end_1 and end_2 attributes is given by the class_of_end_1 and class_of_end_2 attributes respectively for the ClassOfRelationshipWithSignature that classifies the OtherRelationship.

Where the ClassOfRelationshipWithSignature is also a ClassOfRelationshipWithRelatedEnd1 or a ClassOfRelationshipWithRelatedEnd2 then the end_1 or end_2 respectively of the OtherRelationship shall take the value specified by the related attribute.

EXPRESS specification

ENTITY other_relationship 
    SUBTYPE OF (relationship);  
    end_1   :   thing;  
    end_2   :   thing;  
END_ENTITY;  

ParticipatingRoleAndDomain

A ParticipatingRoleAndDomain is a RoleAndDomain that is also a ClassOfIndividual that indicates a participating role in an Activity.

EXAMPLE - Performer and pumper are examples of ParticipatingRoleAndDomain.

EXPRESS specification

ENTITY participating_role_and_domain 
    SUBTYPE OF (role_and_domain, class_of_individual);  
END_ENTITY;  

Participation

A Participation is a CompositionOfIndividual that indicates that a PossibleIndividual is a participant in an Activity.

NOTE - The PossibleIndividual that is the part in the Participation is may be a temporal part of a WholeLifeIndividual that is classified by the RoleAndDomain that indicates the role it plays in the Activity.

EXAMPLE - The relationship between the temporal part of P1234 that performs the discharge of the Motor Vessel Murex on 2nd December 2002, and the activity that is that discharge of that vessel is a Participation.

EXPRESS specification

ENTITY participation  
    SUBTYPE OF (composition_of_individual);  
    SELF\composition_of_individual.whole   :   activity;  
END_ENTITY;  

PeriodInTime

A PeriodInTime is a PossibleIndividual that is all space for part of time - a temporal part of the universe.

EXAMPLE 1 - July 2000 is an instance of PeriodInTime.
EXAMPLE 2 - The period described by UTC 2000-11-21T06:00 to UTC 2000-11-21T11:53 is an instance of PeriodInTime compliant with ISO8601.

EXPRESS specification

ENTITY period_in_time 
    SUBTYPE OF (possible_individual);  
END_ENTITY;  

Phase

A Phase is a ClassOfArrangedIndividual based on the nature of the boundary behaviour of material resulting from its atomic and molecular bonding.

NOTE - Phase excludes types of internal structure such as crystalline.

EXAMPLE - The classes known as 'liquid' and 'solid' can be represented by instances of Phase.

EXPRESS specification

ENTITY phase  
    SUBTYPE OF (class_of_arranged_individual); 
END_ENTITY;  

PhysicalObject

A PhysicalObject is a PossibleIndividual that is a distribution of matter, energy, or both.

EXAMPLE 1 - A piece of metal is a PhysicalObject.
EXAMPLE 2 - A tree is a PhysicalObject;
EXAMPLE 3 - The thing identified by tag P101 is a PhysicalObject.
EXAMPLE 4 - A light beam is a PhysicalObject.
EXAMPLE 5 - A tank that is built and dismantled on site is both a MaterializedPhysicalObject and a FunctionalPhysicalObject.

EXPRESS specification

ENTITY physical_object  
    SUBTYPE OF (possible_individual);  
END_ENTITY; 

PointInTime

A PointInTime is an Event that is the whole space extension with zero extent in time.

NOTE - In using this part of ISO15926, a PointInTime should be represented by a RepresentationOfGregorianDateAndUtcTime.

EXAMPLE - The time known as UTC 1999-05-13T16:31:23.56 is a PointInTime.

EXPRESS specification

ENTITY point_in_time  
    SUBTYPE OF (Event);  
END_ENTITY; 

PossibleIndividual

A PossibleIndividual is a Thing that exists in space and time.
This includes:
- things where any of the space time dimensions are vanishingly small,
- those that are either all space for any time, or all time and any space,
- the entirety of all space time
- things that actually exist, or have existed,
- things that are fictional or conjectured and possibly exist in the past, present or future,
- temporal parts (states) of other individuals,
- things that have a specific position, but zero extent in one or more dimensions, such as points, lines, and surfaces.

In this context existence is based upon being imaginable within some consistent logic, including actual, hypothetical, planned, expected, or required individuals.

EXAMPLE - The pump with serial number ABC123, Battersea Power Station, Sir Joseph Whitworth, Shakespeare, and the starship "Enterprise" can be represented by instances of PossibleIndividual.

EXPRESS specification

ENTITY possible_individual  
    SUBTYPE OF (thing);  
END_ENTITY;  

PossibleRoleAndDomain

A PossibleRoleAndDomain is a Relationship that indicates that a player PossibleIndividual can possibly play the played RoleAndDomain.

EXAMPLE - Acting as an anchor is a possible role for pump 1234.

EXPRESS specification

ENTITY possible_role_and_domain  
    SUBTYPE OF (relationship); 
    played   :   role_and_domain; 
    player   :   possible_individual;
END_ENTITY;  

Property

A Property is a ClassOfIndividual that is a member of a continuum of a ClassOfProperty. The Property may be quantified by mapping to a number on a scale.

NOTE 1 - A member of a Property is a PossibleIndividual that has the same degree or magnitude of the quality or characteristic represented by the Property as other members.
NOTE 2 - The types of characteristic or quality, such as temperature or density, are instances of ClassOfProperty.
NOTE 3 - Duplicate properties (e.g. that map to the same number on the same scale) should not be created within the same data store.

EXAMPLE - A particular degree of hotness can be represented as an instance of Property.

EXPRESS specification

ENTITY property  
    SUBTYPE OF (class_of_individual);  
END_ENTITY;  

PropertyForShapeDimension

A PropertyForShapeDimension is a ClassOfRelationship that indicates that the members of the ShapeDimension are of the Property.

EXAMPLE - 10m diameter is a 10m length.

EXPRESS specification

ENTITY property_for_shape_dimension 
    SUBTYPE OF (class_of_relationship);  
    property          :   property;  
    shape_dimension   :   shape_dimension;  
END_ENTITY; 

PropertyQuantification

A PropertyQuantification is a FunctionalMapping whose members map a Property to an ArithmeticNumber.

EXAMPLE - The link that maps a particular mass to the number 4.2 can be represented by an instance of PropertyQuantification.

NOTE 1 - The actual representation of the number is done by linking the ArithmeticNumber to a ClassOfExpressInformationRepresentation via a ClassOfRepresentationOfThing.
NOTE 2 - The unit or scale of the quantification is given by classifying the PropertyQuantification by a Scale.

EXPRESS specification

ENTITY property_quantification  
    SUBTYPE OF (functional_mapping); 
    SELF\functional_mapping.input    :   property;  
    SELF\functional_mapping.result   :   arithmetic_number;  
END_ENTITY;  

PropertyRange

A PropertyRange is a PropertySpace that is a continuous subset of a SinglePropertyDimension.

EXAMPLE - -10C to +20C is a PropertyRange of temperature.

EXPRESS specification

ENTITY property_range  
    SUBTYPE OF (property_space);
END_ENTITY; 

PropertySpace

A PropertySpace is a ClassOfProperty whose members are a coherent continuum of Property.

EXAMPLE 1 - The set of temperature properties, known as temperature, is a PropertySpace.
EXAMPLE 2 - The members of the pressure and flow rate ClassOfProperty that fall on a particular pump curve is a PropertySpace.

EXPRESS specification

ENTITY property_space
    SUBTYPE OF (class_of_property); 
END_ENTITY;  

PropertySpaceForClassOfShapeDimension

A PropertySpaceForClassOfShapeDimension is a ClassOfClassOfRelationship that indicates the PropertySpace that a ClassOfShapeDimension is from.

EXAMPLE - Diameter is a length dimension.

EXPRESS specification

ENTITY property_space_for_class_of_shape_dimension  
    SUBTYPE OF (class_of_class_of_relationship);  
    class_of_shape_dimension   :   class_of_shape_dimension; 
    property_space : property_space;  
END_ENTITY; 

RealNumber

A RealNumber is an ArithmeticNumber that is a real number.

EXAMPLE - 3.2146 is a representation of a real number.

EXPRESS specification

ENTITY real_number  
    SUBTYPE OF (arithmetic_number);  
END_ENTITY; 

Recognition

A Recognition is a Relationship that indicates that a Thing is recognized through an Activity .

EXAMPLE - Measurement activity #358 recognized that the room was a member of the 20 Celsius Property.

EXPRESS specification

ENTITY recognition  
    SUBTYPE OF (relationship); 
    recognized    :   thing;  
    recognizing   :   activity; 
END_ENTITY;  

(ABS)Relationship

A Relationship is an AbstractObject that indicates something that one thing has to do with another.

NOTE - Only classes of binary relationship are supported. More complex objects can be supported using MultidimensionalObject and ClassOfMultidimensionalObject.

EXPRESS specification

ENTITY relationship  
    ABSTRACT SUPERTYPE OF (ONEOF(
	functional_mapping, recognition,
	approval, comparison_of_property,
	class_of_relationship_with_signature, 
	classification,
	composition_of_individual, cause_of_event,
	connection_of_individual, 
	indirect_property, 
	individual_used_in_connection, 
	intended_role_and_domain,
	involvement_by_reference,
	lifecycle_stage, 
	possible_role_and_domain, 
	relative_location,
	representation_of_thing,
	responsibility_for_representation,
	specialization, other_relationship, 
	temporal_sequence,
	usage_of_representation))  
    SUBTYPE OF (abstract_object);   
END_ENTITY;  

RelativeLocation

A RelativeLocation is a Relationship that indicates that the position of one PossibleIndividual is relative to another.

NOTE - The classification of the RelativeLocation indicates the nature of the RelativeLocation, e.g. above, below, beside.
EXAMPLE - A being the located relative to B being the locator in a RelativeLocation that is classified by the ClassOfRelativeLocation above, indicates that A is above B.

EXPRESS specification

ENTITY relative_location  
    SUBTYPE OF (relationship);  
    located   :   possible_individual;  
    locator   :   possible_individual;  
END_ENTITY;  

RepresentationForm

A RepresentationForm is a ClassOfClassOfInformationRepresentation that distinguishes the form of representation.

EXAMPLE - Hexadecimal, text, script, symbol, picture, diagram, semaphore, Morse code, music score, MIDI file format, and XML can each be represented by instances of RepresentationForm.

EXPRESS specification

ENTITY representation_form 
    SUBTYPE OF (class_of_class_of_information_representation);  
END_ENTITY;  

RepresentationOfGregorianDateAndUtcTime

A RepresentationOfGregorianDateAndUtcTime is a ClassOfInformationRepresentation whose members are representations of time using the UTC system of time identification as specified in ISO 8601:2000 together with the Gregorian system for representing dates.
All times shall be represented using UTC representation of time. Dates shall follow the Gregorian calendar.

NOTE - Coordinated Universal Time (UTC) is the basis for legal time worldwide and follows TAI (see below) exactly except for an integral number of seconds, presently 32. These leap seconds are inserted on the advice of the International Earth Rotation Service (IERS) (http://hpiers.obspm.fr) to ensure that, on average over the years, the Sun is overhead within 0.9 seconds of 12:00:00 UTC on the meridian of Greenwich. UTC is thus the modern successor of Greenwich Mean Time, GMT, which was used when the unit of time was the mean solar day. International Atomic Time (TAI) is calculated by the BIPM from the readings of more than 200 atomic clocks located in metrology institutes and observatories in more than 30 countries around the world. TAI is made available every month in the BIPM Circular T (ftp://62.161.69.5/pub/tai/publication). It is estimated that TAI does not lose or gain with respect to an imaginary perfect clock by more than about one tenth of a microsecond (0.0000001 second) per year.

EXPRESS specification

ENTITY representation_of_Gregorian_date_and_UTC_time  
    SUBTYPE OF (class_of_information_representation);  
    year     :   INTEGER;  
    month    :   OPTIONAL INTEGER;  
    day      :   OPTIONAL INTEGER;  
    hour     :   OPTIONAL INTEGER; 
    minute   :   OPTIONAL INTEGER; 
    second   :   OPTIONAL REAL;  
    WHERE  
    valid_month   :   {1<= month <= 12}; 
    valid_day     :   {1<= day <= 31}; 
    valid_hour    :   {0<= hour <= 23};  
    valid_minute  :   {0<= minute <= 59}; 
    valid_second  :   {0.0 <= second < 61.0};  
END_ENTITY;  

RepresentationOfThing

A RepresentationOfThing is a Relationship that indicates that a PossibleIndividual is a sign for a Thing.

ENTITY representation_of_thing  
    SUBTYPE OF (relationship); 
    represented   :   thing;  
    sign          :   possible_individual;  
END_ENTITY;  

ResponsibilityForRepresentation

A ResponsibilityForRepresentation is a Relationship that indicates that the controller PossibleIndividual administers the controlled RepresentationOfThing.

EXAMPLE - The responsibility for the administration of this standard lies with ISO.

EXPRESS specification

ENTITY responsibility_for_representation 
    SUBTYPE OF (relationship); 
    controlled   :   representation_of_thing;
    controller   :   possible_individual;  
END_ENTITY; 

RightNamespace

A RightNamespace is a Namespace that indicates that the <class_of_part> is the right most part of the <class_of_whole>.

EXAMPLE - When ZH is the namespace in 5367ZH, this is indicated by a RightNamespace relationship between them.

EXPRESS specification

ENTITY right_namespace  
    SUBTYPE OF (namespace);  
END_ENTITY;  

Role

A Role is a RoleAndDomain that indicates what some thing has to do with an Activity, Relationship, or MultidimensionalObject.

EXAMPLE 1 - Employee is a Role that indicates what a temporal part of a person has to do with an employment relation.
EXAMPLE 2 - Pumper is a Role that indicates what a temporal part of a pump has to do with a pumping activity.

EXPRESS specification

ENTITY role  
    SUBTYPE OF (role_and_domain);  
END_ENTITY;  

RoleAndDomain

A RoleAndDomain is a Class that specifies the domain and role for an end of a ClassOfRelationship or ClassOfMultidimensionalObject.

NOTE - A RoleAndDomain is analogous to specifying an EXPRESS attribute or its inverse.

EXAMPLE - "Husband and man" and "wife and woman" are examples of RoleAndDomain.

EXPRESS specification

ENTITY role_and_domain  
    SUBTYPE OF (class);  
END_ENTITY;  

Scale

A Scale is a ClassOfIsomorphicFunctionalMapping whose members are members of PropertyQuantification. It indicates the NumberSpace a PropertySpace maps to for the Scale in question.

EXAMPLE - The link that is known as the Celsius scale between the ClassOfNumber [-273, inf] and the ClassOfProperty 'Temperature' can be represented by an instance of Scale.

EXPRESS specification

ENTITY scale  
    SUBTYPE OF (class_of_isomorphic_functional_mapping);  
    SELF\class_of_functional_mapping.codomain   :   number_space; 
    SELF\class_of_functional_mapping.domain
    :   property_space;   
END_ENTITY;  

Shape

A Shape is a Property that depends on constant relations of position and proportionate distance among all the points composing its outline or its external surface.

EXAMPLE 1 - 20mm diameter circle and 10-20mm diameter circles are examples of Shape.
EXAMPLE 2 - Irregular forms such as the outer envelope of a model of pump can be represented by instances of Shape.

EXPRESS specification

ENTITY shape  
    SUBTYPE OF (property);  
END_ENTITY;  

ShapeDimension

A ShapeDimension is a ClassOfClassOfIndividual that is a set of IndividualDimension that define an aspect of a shape.

EXAMPLE - Diameter of 5m, height of 3mm, and width of 10cm are members of ShapeDimension.

EXPRESS specification

ENTITY shape_dimension  
    SUBTYPE OF (class_of_class_of_individual); 
END_ENTITY;  

SinglePropertyDimension

A SinglePropertyDimension is a PropertySpace that is a single and complete continuum of properties each of which maps to a single number.

EXAMPLE - Temperature, pressure, viscosity, and length are examples of SinglePropertyDimension.

EXPRESS specification

ENTITY single_property_dimension  
    SUBTYPE OF (property_space);  
END_ENTITY;  

SpatialLocation

A SpatialLocation is a PhysicalObject that has continuity of relative position.

EXAMPLE - Geographic datum, license block, construction area, country, air corridor, maritime traffic zone, hazard control zone, 4D points, lines, planes, solids.

EXPRESS specification

ENTITY spatial_location 
    SUBTYPE OF (physical_object); 
END_ENTITY; 

Specialization

A Specialization is a Relationship that indicates that all members of the subclass are members of the superclass. Specialization is transitive.

NOTE - If A is a Specialization of B and B is a Specialization of C, then A is necessarily a Specialization of C.

EXAMPLE - Centrifugal pump is a Specialization of pump.

EXPRESS specification

ENTITY specialization  
SUPERTYPE OF (ONEOF(
	boundary_of_number_space,
	boundary_of_property_space,
	specialization_by_domain, 
	specialization_by_role,
	specialization_of_individual_dimension_from_property))  
    SUBTYPE OF (relationship);  
    subclass     :   class;  
    superclass   :   class;  
END_ENTITY;

SpecializationByDomain

A SpecializationByDomain is a Specialization that indicates that the member of the RoleAndDomain is a Specialization of the domain Class.

EXAMPLE - Manufacturing company is a specialization of the company domain.

EXPRESS specification

ENTITY specialization_by_domain  
    SUBTYPE OF (specialization); 
    SELF\specialization.subclass   :   role_and_domain;  
END_ENTITY;  

SpecializationByRole

A SpecializationByRole is a Specialization that indicates that the RoleAndDomain is of the Role indicated by the superclass.

EXAMPLE - Manufacturing company is a specialization by role of manufacturer.

EXPRESS specification

ENTITY specialization_by_role  
    SUBTYPE OF (specialization);  
    SELF\specialization.subclass     :   role_and_domain;  
    SELF\specialization.superclass   :   role;  
END_ENTITY;  

SpecializationOfIndividualDimensionFromProperty

A SpecializationOfIndividualDimensionFromProperty is a Specialization that indicates the members of the dimension are members of the Property.

EXAMPLE - A diameter of 10m is a length of 10m.

EXPRESS specification

ENTITY specialization_of_individual_dimension_from_property 
    SUBTYPE OF (specialization); 
    SELF\specialization.subclass     :   individual_dimension;  
    SELF\specialization.superclass   :   property; 
END_ENTITY;  

Status

A Status is a ClassOfIndividual that is a characteristic or quality that is described by discrete, unordered values.

EXAMPLE - The classes known as 'open', 'painted', 'approved', 'old', 'new', 'worn', 'hazardous', 'safe', 'dangerous', 'happy', 'sad', and 'rusty' can all be represented as instances of Status.

NOTE - Degrees of openness or paintedness are represented as instances of Property and not instances of Status.

EXPRESS specification

ENTITY status  
    SUBTYPE OF (class_of_individual); 
END_ENTITY;  

Stream

A Stream is a PhysicalObject that is material or energy moving along a path, where the path is the basis of identity and may be constrained. The stream consists of the temporal parts of those things that are in the stream whilst they are in it.

EXAMPLE 1 - Flux is a 4D-constrained case of Stream where the path crosses a surface.
EXAMPLE 2 - The naphtha flowing in a pipe between a crude distillation unit and a platformer is a Stream.

EXPRESS specification

ENTITY stream  
    SUBTYPE OF (physical_object);  
END_ENTITY;  

TemporalBounding

A TemporalBounding is an AssemblyOfIndividual that indicates that the part Event is a temporal boundary of the whole PossibleIndividual.

EXPRESS specification

ENTITY temporal_bounding 
    ABSTRACT SUPERTYPE OF (ONEOF(ending, beginning))  
    SUBTYPE OF (composition_of_individual);  
    SELF\composition_of_individual.part   :   Event;  
END_ENTITY; 

TemporalSequence

A TemporalSequence is a Relationship that indicates that one PossibleIndividual precedes another in a temporal sense.

EXAMPLE 1 - The Relationship that indicates that the PossibleIndividual that is the construction phase of a plant precedes the PossibleIndividual that is the commissioning phase of a plant can be represented by an instance of TemporalSequence.
EXAMPLE 2 - The Relationship that indicates that the PeriodInTime known as the industrial revolution preceded the PeriodInTime known as the information revolution can be represented by an instance of TemporalSequence.

EXPRESS specification

ENTITY temporal_sequence 
    SUBTYPE OF (relationship); 
    predecessor   :   possible_individual; 
    successor     :   possible_individual;  
END_ENTITY; 

TemporalWholePart

A TemporalWholePart is a CompositionOfIndividual that indicates that one PossibleIndividual is a temporal part of another PossibleIndividual. The spatial extent of the temporal part is that of the temporal whole for the period of the existence of the temporal part. Relationships that apply to the whole PossibleIndividual also apply to the temporal parts of the PossibleIndividual, except when the relationships relate to the temporal nature of the whole. So if a PossibleIndividual is connected so are all its temporal parts, but being a WholeLifeIndividual is not inherited by its temporal parts.

NOTE - Since TemporalWholePart is transitive (inherited from its supertype) a hierarchy of temporal parts is possible, with a WholeLifeIndividual at the top.

EXAMPLE 1 - The relation that indicates that an operating period of a pump is a temporal part of the pump can be represented by an instance of TemporalWholePart.
EXAMPLE 2 - The relationship that indicates that the time period known as March 1999 is part of the period known as 1st Quarter 1999 can be represented by an instance of TemporalWholePart.

EXPRESS specification

ENTITY temporal_whole_part 
    SUBTYPE OF (composition_of_individual);  
END_ENTITY;  

Thing

A Thing is anything that is or may be thought about or perceived, including material and non-material objects, ideas, and actions. Every Thing is either a PossibleIndividual, or an AbstractObject.

NOTE 1 - Every Thing is identifiable within a system. System identifiers created by other systems and received as part of a data exchange may be stored for future reference as an identification, referring to the originating organisation or system.
NOTE 2 Every example provided for other entity data types declared in this schema is also an example of Thing.

EXPRESS specification

ENTITY thing  
    ABSTRACT SUPERTYPE OF (ONEOF(possible_individual, abstract_object));  
    id :   STRING;  
    record_copy_created :   OPTIONAL representation_of_Gregorian_date_and_UTC_time; 
    record_created :     OPTIONAL representation_of_Gregorian_date_and_UTC_time;
    record_creator :     OPTIONAL possible_individual;  
    record_logically_deleted :   OPTIONAL representation_of_Gregorian_date_and_UTC_time; 
    why_deleted  :     OPTIONAL class_of_information_representation; 
    UNIQUE UR1   :   id;  
END_ENTITY;  

UnionOfSetOfClass

A UnionOfSetOfClass is a FunctionalMapping that indicates that the membership of the result Class is the union of the members of the EnumeratedSetOfClass classes.

EXAMPLE - The union of the EnumeratedSetOfClass {{A,B,C},{B,C,D},{C,D,E}} is {A,B,C,D,E}.

EXPRESS specification

ENTITY union_of_set_of_class  
    SUBTYPE OF (functional_mapping);  
    SELF\functional_mapping.input    :   enumerated_set_of_class;  
    SELF\functional_mapping.result   :   class;  
END_ENTITY;  

UpperBoundOfNumberRange

An UpperBoundOfNumberRange is a Classification that indicates an ArithmeticNumber is the largest value in a NumberRange.

EXAMPLE - 5.3 is the upper bound of the range [3.1 to 5.3].

EXPRESS specification

ENTITY upper_bound_of_number_range  
    SUBTYPE OF (classification);  
    SELF\classification.classified   :   arithmetic_number;  
    SELF\classification.classifier   :   number_range;  
END_ENTITY;  

UpperBoundOfPropertyRange

An UpperBoundOfPropertyRange is a Classification that indicates that the Property is the upper bound of the PropertyRange.

EXAMPLE - +20 Celsius is the upper bound of the range -10 to +20 Celsius.

EXPRESS specification

ENTITY upper_bound_of_property_range 
    SUBTYPE OF (classification);  
    SELF\classification.classified   :   property;  
    SELF\classification.classifier   :   property_range;  
END_ENTITY;  

UsageOfRepresentation

A UsageOfRepresentation is a Relationship that indicates that the RepresentationOfThing is used by the PossibleIndividual. Usage does not imply responsibility.

EXAMPLE - The sign "P101" is used by the XYZ company to represent a particular pump in a design.

EXPRESS specification

ENTITY usage_of_representation  
    SUBTYPE OF (relationship);  
    used   :   representation_of_thing;  
    user   :   possible_individual; 
END_ENTITY; 

WholeLifeIndividual

A WholeLifeIndividual is a PossibleIndividual that is a member of a ClassOfIndividual, and is not a temporal part of any other PossibleIndividual that is also a member of the same ClassOfIndividual. A WholeLifeIndividual includes its past and future.

NOTE - A possible future temporal part of the WholeLifeIndividual is a PossibleIndividual that is related to the WholeLifeIndividual by a TemporalWholePart relation.

EXAMPLE 1 - A plastic cup (bounded by its creation and destruction Events) can be represented by an instance of WholeLifeIndividual. The cup whilst it stands on this table is a temporal part of this WholeLifeIndividual.
EXAMPLE 2 - The universe for all time is a WholeLifeIndividual.

EXPRESS specification

ENTITY whole_life_individual  
    SUBTYPE OF (possible_individual);  
END_ENTITY;