Explain why a file-processing system may be referred to as belonging to a two-schema

QUESTION:

Explain why a file-processing system may be referred to as belonging to a two-schema architecture?

SOLUTION:

A file-processing system can be referred to as a two-schema architecture because any modification to the storage structure or access strategy in the internal schema necessitates changes to the application programs in the external schema and the subsequent recompilation and testing of these programs.

0 / 5

Your page rank: