Queries
A query is a request that asks a database a specific question or asks it to retrieve, filter, or combine data in a certain way, such as finding every customer in a specific city or listing orders placed last week. Because the database itself searches through the data to answer a query, a person or program does not need to know exactly where or how the data is physically stored, only what question they want answered.
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Test your knowledge
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Midterm
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This final covers a lot of topics, so it's split into 2 parts. Each part includes a question from every one of its topics.
Final, Part 1 of 2
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Final, Part 2 of 2
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