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The PL / SQL (Procedural Language / Structured QueryLanguage) is a proprietary programming language (forOracle database), procedural, and server-based extensionof SQL.

The PL / SQL supports variables, conditions, and handles exceptions.

The PL / SQL has several predefined packages, the most important are:


  •      DBMS_OUTPUT - for output operations
  •      DBMS_JOBS - to launch specific procedures orfunctions in a particular time, for example, the scheduling
  •      DBMS_XPLAN - to format output "Explain Plan"
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