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Application module:
External item identification assignment |
ISO/TS 10303-1128:2019(E)
© ISO
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This clause specifies the information requirements for the
External item identification assignment
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.
This clause defines the information requirements to which implementations shall
conform using the EXPRESS language as defined in ISO 10303-11.
The following begins the
External item identification assignment schema.
EXPRESS specification:
*)
SCHEMA External_item_identification_assignment_arm;
(*
This subclause specifies the ARM type
for this application module. The ARM type and
definition is specified below.
The external_identification_item type is an
extensible list of alternate data types
that allows for the designation of the data
type External_item_identification.
NOTE
The list of entity data types may be
extended in application modules that use the constructs of
this module.
EXPRESS specification:
*)
TYPE
external_identification_item =
EXTENSIBLE
GENERIC_ENTITY
SELECT
(External_item_identification);
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.
An External_item_identification is a type of External_source_identification
that provides the identifier of an item in the context of an external source where it can be found.
EXPRESS specification:
*)
ENTITY External_item_identification
SUBTYPE OF (External_source_identification);
external_id : STRING;
END_ENTITY;
(*
Attribute definitions:
external_id:
the identifier of the external item, in its external context.
EXAMPLE 1
For a digital file, the file name of a file in the directory where it is located is an example of external_id.
EXAMPLE 2
For a book, the external_id could be the ISBN number.
An External_source_identification is the identification of the source where an item, or the components of an item, can be found.
EXPRESS specification:
*)
ENTITY External_source_identification;
source_id : STRING;
source_type : STRING;
item : external_identification_item;
description :
OPTIONAL
STRING;
END_ENTITY;
(*
Attribute definitions:
source_id:
the text that identifies the context in which the external_id
is specified.
EXAMPLE 1
For a digital file identified by a filename and directory path, the source_id is the directory path.
source_type:
the text that identifies the identification scheme of the source_id.
EXAMPLE 2
In the case of files, examples of source_type are:
- 'URL' - for a web page;
- 'FTP' - for an FTP address;
- 'ISBN' - for physical documents.
item:
the external_identification_item
whose source is identified.
description:
the text that provides further information about the external identification. The value of this attribute need not be specified.
An External_item_identification_relationship is a relationship between two
external_identification_item
objects.
EXPRESS specification:
*)
ENTITY External_item_identification_relationship;
description :
OPTIONAL
STRING;
id :
OPTIONAL
STRING;
related : External_item_identification;
relating : External_item_identification;
relation_type : STRING;
WHERE
WR1: relating :<>: related;
END_ENTITY;
(*
Attribute definitions:
description:
the text that provide further information about the External_item_identification_relationship.
The value of this attribute need not be specified.
id:
the identifier for the External_item_identification_relationship.
The value of this attribute need not be specified.
related:
the other object of
external_identification_item
that is part of the relationship.
relating:
one object of
external_identification_item
that is part of the relationship.
relation_type:
the meaning of the relationship.
Formal propositions:
WR1:
the related and the relating must be different.
*)
END_SCHEMA; -- External_item_identification_assignment_arm
(*
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