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The term ''data model'' actually refers to two very different things: a description of data structure and the way data is organized using, for example, a database management system.
A data model describes the structure of the data within a given ___domain and, by implication, the underlying structure of that ___domain itself. A data model may thus represent classes of entities about which a company wishes to hold information, the attributes of that information, and relationships among those entities. The model describes the organization irrespective of how data might be represented in a computer system.
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