Materialized view: Materialized view is a database object that contains the result of a query. It is mainly used for increasing application performance. It is used for replicating data and to cache expensive queries in a data warehouse environment. </PROGRAM-PLAN-INNTRO> Constraints on materialized views enforcing functional dependency: The constraints on materialized view helps for increasing execution speed. Materialized view is refreshed by the type of materialized view. The constraints under materialized view should be normalized. That means each dimension should be contained in one table. Also, the joins between tables must be normalized or partially normalized. Hence, there is a guarantee that each child side row joins with exactly one parent side row. Hence, constraints on materialized view can be used for enforcing functional dependency.

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Chapter 7, Problem 43E

Program Plan Intro

Materialized view:

Materialized view is a database object that contains the result of a query.

It is mainly used for increasing application performance.

It is used for replicating data and to cache expensive queries in a data warehouse environment.

</PROGRAM-PLAN-INNTRO>

Constraints on materialized views enforcing functional dependency:

The constraints on materialized view helps for increasing execution speed.

Materialized view is refreshed by the type of materialized view.

The constraints under materialized view should be normalized.

That means each dimension should be contained in one table.

Also, the joins between tables must be normalized or partially normalized.

Hence, there is a guarantee that each child side row joins with exactly one parent side row.

Hence, constraints on materialized view can be used for enforcing functional dependency.

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