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2 months ago
When redesigning a database, how can we check assumptions about functional dependencies?
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Database Processing: Fundamentals, Design, and Implementation
Edition: 15th
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Database Processing: Fundamentals, Design, and Implementation
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Niquegirl21!
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#1
2 months 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
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#2
2 months ago
Appreciate the effort, thank you!
Niquegirl21!
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#3
2 months ago
You're very welcome ... please mark the topic solved when you get a chance
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