When redesigning a database, how can we check assumptions about functional dependencies?
What will be an ideal response?
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.
Business
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a. Truth in Lending Act b. Consumer Protection Act c. Freedom of Information Act d. National Labor Relations Act
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As compared to primary data, secondary data are collected ________
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