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Transaction Control Language
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Transaction Control Language : ウィキペディア英語版
Transaction Control Language

A Transaction Control Language (TCL) is a computer language and a subset of SQL, used to control transactional processing in a database. A transaction is logical unit of work that comprises one or more SQL statements, usually a group of Data Manipulation Language (DML) statements.
Examples of TCL commands include:
*COMMIT to apply the transaction by saving the database changes.
*ROLLBACK to undo all changes of a transaction.
*SAVEPOINT to divide the transaction into smaller sections. It defines breakpoints for a transaction to allow partial rollbacks.
==See also==

* Data Definition Language
* Data Manipulation Language
* Data Control Language


抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
ウィキペディアで「Transaction Control Language」の詳細全文を読む



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