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Unit 2: Relational Query Languages

20242m

The ability to query data, as well as insert, delete, and alter tuples, is offered by:

  • (i) TCL (Transaction Control Language)
  • (ii) DCL (Data Control Language)
  • (iii) DDL (Data Definition Language)
  • (iv) DML (Data Manipulation Language)
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Answer: (iv) DML (Data Manipulation Language)

Explanation: DML provides ability to query and modify data: SELECT, INSERT, UPDATE, DELETE. TCL is for transaction control (COMMIT, ROLLBACK), DCL for access control (GRANT, REVOKE), DDL for structure (CREATE, ALTER, DROP).

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