Multiple choice technology testing

What is an index?

  1. An index is the same as alias.

  2. An index is a special way to join 2 or more tables.

  3. An index is a database table attribute, which speeds-up data search within a table.

  4. An index is a database row attribute, which speeds-up data search within a table.
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C Correct answer
Explanation

An index is a schema object associated with a table that speeds up data retrieval. It acts as a table-level attribute or structure rather than an individual row-level attribute, facilitating faster searches.

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