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The functional dependency can be tested easily on the materialized view, using the constraints ____________. (a) Primary key (b) Null (c) Unique (d) Both Null and Unique The question was asked during an online interview. I need to ask this question from Algorithms for Decomposition in portion Normalization of Database Management

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Right option is (d) Both Null and Unique To explain: Primary key contains both unique and not null constraints.

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