Question

4. Define query. What is its function?​

Answer 1

Answer:

A query function is a mathematical expression evaluated against each item returned by a query, and whose output is stored in a dynamic, temporary field generated at query time.

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Answer 2

Answer:

A query is a request for data or information from a database table or combination of tables. This data may be generated as results returned by Structured Query Language (SQL) or as pictorials, graphs or complex results, e.g., trend analyses from data-mining tools.

Explanation:

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