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

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Data Modeling – Business Descriptions of the World

As with maps of the Earth, the first maps of companies’ data were limited in “area”. They were simply descriptions of the individual files used by the earliest programs. In effect, documentation of the files’ layouts were maps. Moreover, there were separate files for every computer application program. That’s a lot of unconnected maps.

In the 1960s, Charles Bachman created one of the first database management systems[(]¸ Integrated Data Store (IDS), which later became the IBM product, IDMS.[7] For the first time, a company could consider a complete set of data as a whole unit. There was little guidance, however, as to how to organize data, and none whatsoever as to how to document that organization. ...

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