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Enterprise Model Patterns: Describing the World (UML Version) by David C. Hay

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Capturing Time with Entity Classes

In principle, these attributes could be on every entity class, including such reference entity classes as Party and Asset Specification. There is a continuum, however, between maintenance of such reference data, which is properly done by data administration, and maintenance of the data that are central to operations, which is properly done by the business people responsible for the data. In the latter case, it is appropriate to make the effective dates visible. In the former case, this is less important (although behind the scenes, this information should, in fact, be kept).

In the context of a data warehousing environment, when data are extracted to be placed in data marts, typically organized around a fact ...

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