5 Query model

5.1 General

The data model specified in ISO/TS 29002-31 is hereby incorporated by reference with the changes described in 5.2.

NOTE   The rationale for these changes is as follows:

In ISO/TS 29002-31:

• a language can be identified by an ISO language code and, optionally, an ISO country code; or by the IRDI of a concept dictionary entry that represents the language;

• a UOM can be identified by a UOM code (e.g., "m" for "metres"), or by the IRDI of a concept dictionary entry that represents the UOM;

• a currency can be identified by its ISO currency code, or by the IRDI of a concept dictionary entry that represents the currency;

However, within ISO 22745, a language, a UOM, or a currency is always referenced by its OTD-assigned IRDI, and, thus, the code attribute cannot be present in a query that complies with this part of ISO 22745 that references a language, a UOM, or a currency.

5.2 Modifications to existing entities

5.2.1 string_pattern_expression

Change the cardinality of attribute language_code from [0..1] to [0..0].

Change the cardinality of attribute country_code from [0..1] to [0..0].

NOTE   See ISO 22745-13 for the requirement that an IRDI be assigned for each language.

5.2.2 string_size_expression

Change the cardinality of attribute language_code from [0..1] to [0..0].

Change the cardinality of attribute country_code from [0..1] to [0..0].

NOTE   See ISO 22745-13 for the requirement that an IRDI be assigned for each language.

5.2.3 range_expression

Change the cardinality of attribute UOM_code from [0..1] to [0..0].

Change the cardinality of attribute currency_code from [0..1] to [0..0].

NOTE   See ISO 22745-13 for the requirement that an IRDI be assigned for each UOM and currency.