Commit (data management)

Multi tool useFor the revision control concept, see Commit (revision control).
In computer science and data management, a commit is the making of a set of tentative changes permanent. A popular usage is at the end of a transaction. A commit is an act of committing. The record of commits is called the commit log.
Data management
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. Alternatively, a ROLLBACK
statement can be issued, which undoes all the work performed since BEGIN WORK
was issued. A COMMIT
statement will also release any existing savepoints that may be in use.
In terms of transactions, the opposite of commit is to discard the tentative changes of a transaction, a rollback.
See also
- Commit (version control)
- Atomic commit
- Two-phase commit protocol
- Three-phase commit protocol
Database management systems
|
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Types | Object-oriented
Relational
- Document-oriented
- Graph
- NoSQL
- NewSQL
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Concepts | - Database
- ACID
- Armstrong's axioms
- CAP theorem
- CRUD
- Null
- Candidate key
- Foreign key
- Superkey
- Surrogate key
- Unique key
|
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Objects | Relation
- View
- Transaction
- Transaction log
- Trigger
- Index
- Stored procedure
- Cursor
- Partition
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Components | - Concurrency control
- Data dictionary
- JDBC
- XQJ
- ODBC
- Query language
- Query optimizer
- Query plan
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Functions | - Administration and automation
- Query optimization
- Replication
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Related topics | - Database models
- Database normalization
- Database storage
- Distributed database
- Federated database system
- Referential integrity
- Relational algebra
- Relational calculus
- Relational database
- Relational model
- Object-relational database
- Transaction processing
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