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Insulation between conceptual and physical structures
It can be defined as:
1. The Database Administrator should be capable to vary the storage structures without affecting users' views.
2. The internal structure of the database should be unaffected by the varies to the physical aspects of the storage, like changing to a new storage device.
3. The DBA should be able to vary the conceptual structure of the database without affecting all users.
Ways for Selecting Data Structure Algorithms operate on data structure. Therefore, selection of the best algorithm means selecting the best data structure from whole bunch. Th
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What are the advantages of creating a table from existing table?
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why are older data models are being replaced by new data models
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