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Home Q & A Board Science-Related Homework Help Computer Studies
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Clement Clement
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5 years ago
When redesigning a database, how can we check assumptions about functional dependencies?
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Database Processing: Fundamentals, Design, and Implementation

Database Processing: Fundamentals, Design, and Implementation


Edition: 15th
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#1
5 years ago
There are two related SQL techniques that we can use to check assumptions about functional dependencies in an existing database. The first is to use a correlated subquery with the SQL IN keyword, and the second is to use a correlated subquery structure using the SQL EXISTS and/or NOT EXISTS keywords.
Clement Author
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#2
5 years ago
Appreciate the effort, thank you!
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