ISO 8000-102:2009(E)

8 Terms relating to data dictionaries

8.1
data dictionary

collection of data dictionary entries that allows lookup by entity identifier

8.2
data dictionary entry

description of an entity type containing, at a minimum, an unambiguous identifier, a term, and a definition

NOTE 1 In the ISO 8000 data architecture, a property need not be associated with a specific datatype in a data dictionary. The association between a property and a datatype can be made in a data specification.

NOTE 2 In order to exchange a value corresponding to a data dictionary entry, more information than an identifier, a name and a defintion might be needed. For a property, a data type is needed. Depending on the kind of property, other data elements such as unit of measure, and language, might be needed as well. These things can be given in the data dictionary, in a data specification that references the data dictionary entry, or associated with the data themselves.

NOTE 3 In the ISO 13584 data architecture, the dictionary entry for a property is required to reference a specific datatype. Thus, an ISO 13584 dictionary entry is a special case of the more general concept defined in this clause, as it includes elements of a data specification.


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