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Application module: Selected item | ISO/TS 10303-1357:2004(E) © ISO |
This clause specifies the information requirements for the Selected item application module. The information requirements are specified as the Application Reference Model (ARM) of this application module.
NOTE 1 A graphical representation of the information requirements is given in Annex C.
NOTE 2 The mapping specification is specified in 5.1. It shows how the information requirements are met by using common resources and constructs defined or imported in the MIM schema of this application module.
The following EXPRESS specification begins the Selected_item_arm schema and identifies the necessary external references.
EXPRESS specification:
*)
SCHEMA Selected_item_arm;
(*
The following EXPRESS interface statement specifies the elements imported from the ARM of another application module.
EXPRESS specification:
*)
USE FROM
Class_arm;
--
ISO/TS 10303-1070
(*
NOTE 1 The schemas referenced above are specified in the following part of ISO 10303:
Class_arm ISO/TS 10303-1070
NOTE 2 See Annex C, Figures C.1and C.2 for a graphical representation of this schema.
This subclause specifies the ARM types for this application module. The ARM types and definitions are specified below.
The selected_item_context_items type is an extensible list of alternate data types. Additional alternate data types are specified in select data types that extend the selected_item_context_items type.
NOTE This empty extensible select requires extension in a further module to ensure that entities that refer to it have at least one valid instantiation.
EXPRESS specification:
*)
TYPE
selected_item_context_items =
EXTENSIBLE
GENERIC_ENTITY
SELECT;
END_TYPE;
(*
The selected_item_select type is an extensible list of alternate data types. Additional alternate data types are specified in select data types that extend the selected_item_select type.
NOTE This empty extensible select requires extension in a further module to ensure that entities that refer to it have at least one valid instantiation.
EXPRESS specification:
*)
TYPE
selected_item_select =
EXTENSIBLE
GENERIC_ENTITY
SELECT;
END_TYPE;
(*
This subclause specifies the ARM entities for this module. Each ARM application entity is an atomic element that embodies a unique application concept and contains attributes specifying the data elements of the entity. The ARM entities and definitions are specified below.
EXAMPLE 1 Time Change/Shelf Life Selected Item (TCSI/SLSI)is an example of a selected item - All items that must be replaced at specific intervals or that have an elapsed time-related shelf life, are designated as TCSIs or SLSIs, as appropriate. These items do not require the rigorous, up-front CM activity (for example FCA/PCA but rather, they concentrate on the post-delivery CM aspects related to traceability in the field. This is commensurate with their emphasis on being changed/replaced at certain times.
EXAMPLE 2 Maintenance Selected Item (MSI) is an example of a selected item - Certain items whose maintenance requirements dictate a more detailed traceability than normal items, may be designated as MSIs. MSIs emphasize post-delivery traceability for maintenance purposes.
EXAMPLE 3 Support Equipment Selected Item (SESI) is an example of a selected item - Certain support equipment items that require some additional traceability, but do not require up-front CM activity are designated as SESIs. These items typically require traceability by lot or batch, but not by individual item serial number.
EXPRESS specification:
*)
ENTITY Selected_item
SUBTYPE OF (Class);
END_ENTITY;
(*
EXPRESS specification:
*)
ENTITY Selected_item_assignment;
assigned_class : Selected_item;
item : selected_item_select;
item_context : SET[1:?] OF selected_item_context_items;
END_ENTITY;
(*
Attribute definitions:
assigned_class: the class of Selected_item to which the product or activity data referenced by item belongs.
item: the product or activity data that is being designated as a Selected_item.
item_context: the context in which the product or activity data is being identified as being a Selected_item.
EXAMPLE The engine is a identified as a selected item on the car.
*)
END_SCHEMA; -- Selected_item_arm
(*
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