Nested transaction

A nested transaction is a database transaction that is started by an instruction within the scope of an already started transaction.

Nested transactions are implemented differently in different databases. However, they have in common that the changes are not made visible to any unrelated transactions until the outermost transaction has committed. This means that a commit in an inner transaction does not necessary persist updates to the database.

单词	Nested transaction
释义	Nested transaction 英语百科 Nested transaction A nested transaction is a database transaction that is started by an instruction within the scope of an already started transaction. Nested transactions are implemented differently in different databases. However, they have in common that the changes are not made visible to any unrelated transactions until the outermost transaction has committed. This means that a commit in an inner transaction does not necessary persist updates to the database.
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