data base model, Database Management System

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why are older data base model are being replaced by new data model

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Define the terms 1) physical schema 2) logical schema. Physical schema: The physical schema explains the database design at the physical level, which is the lowest level of abs

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What is a function group? A function group is a collection of logically related modules that share global data with every other.  All the modules in the group are contained in

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