Explain the difference between external (view), internal (physical) and conceptual ( logical) schemas
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Allow data access to be customized at the level of individual users or groups of users using different VIEWS of the same conceptual schema. Views are not stored in DBMS but they generated on-demand.
I hope it will help u...
Allow data access to be customized at the level of individual users or groups of users using different VIEWS of the same conceptual schema. Views are not stored in DBMS but they generated on-demand.
I hope it will help u...
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