Transaction processing

COMMIT (SQL)

A COMMIT statement in SQL ends a transaction within a relational database management system (RDBMS) and makes all changes visible to other users. The general format is to issue a BEGIN WORK statement, one or more SQL statements, and then the COMMIT statement. A COMMIT statement will also release any existing savepoints that may be in use. This means that once a COMMIT statement is issued, you can not rollback the transaction. In terms of transactions, the opposite of commit is to discard the tentative changes of a transaction, a rollback. The transaction, commit and rollback concepts are key to the ACID property of databases. (Wikipedia).

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From playlist Solve Multi-Step Equations......Help!

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From playlist Solve Multi-Step Equations......Help!

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Three-phase commit protocol | Database transaction | Commit (data management) | Savepoint | Atomic commit | ACID | Two-phase commit protocol | Rollback (data management)