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jaredman384 jaredman384
wrote...
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7 years ago
Which of the following is not one of the three (3) types of models that make up the ANSI/SPARK 3-schema model?

   A.   
External Schema

   B.   
Physical Schema

   C.   
Internal Schema

   D.   
Conceptual Schema

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wrote...
7 years ago
The one that does not belong is B. Physical Schema

ANSI-SPARC consists of 3 tiers:
Internal: How the data is stored on the database is represented to the user.

Conceptual: The relationship between the data members of the database, exactly what data is stored in it and what a user will need to use the database.

External Layer: Allows a user to access a customized version of the data in the database.
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