01 Dec 96 updated
|Data modeling and relational database design are nearly
synonomous in many minds. Most data modelers consider their end product to be a relational
database instance which implements the requirements asked of the data model.
Of course not all data bases are relational; a very small portion are "object oriented" and a large plurality are probably still hierarchical or networked. However the vast majority of databases for which we construct data models today are relational.
While data modeling and relational database design overlap substantially, their
purposes and scope diverge enough to cause users major problems if we ignore their
differences. This article examines some ways in which current data modeling tools and
methods confuse, mislead, and obscure our database design efforts.
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