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UML and Data Modeling: A Reconciliation by David Hay

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In 1987, Ron Ross recognized that business rule constraints were mostly outside the realm of data models. Many constraints simply could not be expressed using the data modeling structures. So, in 1994, he published The Business Rule Book [Ross, 1994], which both catalogued business rules and devised a notation to add to the data modeling notation to describe rules.

This was the beginning of an overall movement in the industry to analyze the nature of a companys rules in the context of analyzing other dimensions of its requirements.

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