Deprecated -Subject Database Management System › Relational database concepts › Question #15430
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QWhat is the purpose of an index in a relational database?

ID: #15430 Relational database concepts 143 views
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#15430Q ID
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Relational database conceptsTopic
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  • A To define a primary key for a table ✔ ✖
  • B To ensure data integrity ✔ ✖
  • C To optimize query performance ✔ ✖
  • D To enforce referential integrity ✔ ✖
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An index in a relational database is a data structure that improves the speed of data retrieval operations, such as searching, sorting, and joining tables. It allows the database engine to locate data more efficiently by creating a separate data structure based on selected columns.

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