Edited db/transactions.txt changes from [17341]

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A savepoint is a marker within a transaction that enables you to roll back part

of a transaction, rather than the full transaction. Savepoints are available to

the PostgreSQL 8, Oracle and MySQL (version 5.0.3 and newer, when using the

InnoDB storage engine) backends. Other backends will provide the savepoint

functions, but they are empty operations - they won't actually do anything.

of a transaction, rather than the full transaction. Savepoints are available

with the PostgreSQL 8, Oracle and MySQL (version 5.0.3 and newer, when using

the InnoDB storage engine) backends. Other backends provide the savepoint

functions, but they're empty operations -- they don't actually do anything.

.. versionchanged:: 1.4

   Savepoint support when using the MySQL backend was added in Django 1.4

   Savepoint support for the MySQL backend was added in Django 1.4.

Savepoints aren't especially useful if you are using the default

``autocommit`` behavior of Django. However, if you are using