4 Information requirements

This clause specifies the information requirements for the Property identification application module.

The information requirements are specified as a set of units of functionality, application elements, and application assertions. These assertions pertain to individual application entities and to relationships between application entities. The information requirements are defined using the terminology of the subject area of this application module.

1. - A graphical representation of the information requirements is given in annex C.
2. - The mapping specification is specified in 5.1 which shows how the information requirements are met using the integrated resources of this International Standard. The use of the integrated resources introduces additional requirements which are common to application modules and application protocols.

EXPRESS specification:

*)
SCHEMA Property_identification_arm;
(*

4.1 Units of functionality

This subclause specifies the units of functionality (UoF) for the Property identification application module as well as any support elements needed for the module definition. This part of ISO 10303 specifies the following units of functionality:

• Scale;
• Scale_element.

This part of ISO 10303 uses the following units of functionality:

• Engineering_analysis_basics;

  NOTE - The Engineering analysis basics AM contains supertypes of the application objects in this AM. These supertypes have no attributes and merely clarify the meaning of the application objects. These supertypes have no impact on the MIM.

• Maths_space;
• Maths_value;
• Independent_property_definition;
• Property_space_order.

The units of functionality and a description of the functions that each UoF supports are given below.

4.1.1 Scale

The Scale UoF specifies a mapping that defines how each Property within a Property_space is uniquely identified by a Maths_value within a Maths_space.

Most scales are ultimately derived from units of measure defined by ISO.

The following application objects are used by the Scale UoF:

• Components_of_scale;
• Derivation_from_uniaxial_scale;
• Scale;
• Scale_encoding;
• Unit_of_measure.

4.1.2 Scale_element

The Scale_element UoF specifies the identification of a particular Property by a Maths_value with respect to a Scale.

The following application objects are used by the Scale_element UoF:

• Element_of_scale;
• Scale_element.

4.1.3 Engineering_analysis_basics

This UoF is defined in the Engineering_analysis_basics module. The following application entities from this UoF are referenced in the Property_identification module:

• Class;
• Classification;
• Mapping.

4.1.4 Maths_space

This UoF is defined in the Maths_space module. The following application entities from this UoF are referenced in the Property identification module:

• Maths_space.

4.1.5 Maths_value

This UoF is defined in the Maths_value module. The following application entities from this UoF are referenced in the Property identification module:

• Maths_value.

4.1.6 Independent_property_definition

This UoF is defined in the Independent_property_definition module. The following application entities from this UoF are referenced in the Property identification module:

• Independent_property_definition.

4.1.7 Property_space_order

This UoF is defined in the Property_space module. The following application entities from this UoF are referenced in the Property identification module:

• Property_space.

4.2 Required AM ARMs

EXPRESS specification:

*)
USE FROM Engineering_analysis_basics_arm -- Engineering_analysis_basics
  (Class,
  Classification,
  Mapping);
USE FROM Maths_space_arm -- Maths_space
  (Maths_space);
USE FROM Maths_value_arm -- Maths_value
  (Maths_value);
USE FROM Independent_property_definition_arm -- Independent_property_definition
  (Independent_property_definition);
USE FROM Property_space_arm -- Property_space
  (Property_space);
(*

4.3 ARM type definitions

• none.

4.4 ARM entity definitions

• Components_of_scale
• Derivation_from_coordinate_system
• Derivation_from_uniaxial_scale
• Element_of_scale
• Scale
• Scale_encoding
• Scale_element
• Unit_of_measure

4.5 ARM rule definitions

• none.

4.6 ARM function definitions

• none.

EXPRESS specification:

*)
END_SCHEMA;
(*