"A marker that the user includes in a user-defined transaction. When transactions are rolled back, they can be rolled back only to the savepoint." (Microsoft Corporation, "SQL Server 7.0 System Administration Training Kit", 1999)
"A marker that allows an application to roll back part of a transaction if a minor error is encountered. The application must still commit or roll back the full transaction when it is complete." (Anthony Sequeira & Brian Alderman, "The SQL Server 2000 Book", 2003)
"A location to which a transaction can return if part of the transaction is conditionally canceled or encounters an error, hence offering a mechanism to roll back portions of transactions." (SQL Server 2012 Glossary, "Microsoft", 2012)
"A named entity that represents the state of data and schemas at a particular point in time within a unit of work." (Sybase, "Open Server Server-Library/C Reference Manual", 2019)
[nested savepoint] "A savepoint that is included or positioned within another savepoint. Nested savepoints allow an application to have multiple levels of savepoints active at a time and allow the application to roll back to any active savepoint as required." (Sybase, "Open Server Server-Library/C Reference Manual", 2019)
"A marker that allows an application to roll back part of a transaction if a minor error is encountered." (Microsoft Technet)
"A named SCN in a transaction to which the transaction can be rolled back." (Oracle, "Oracle Database Concepts")
"Savepoints help to implement nested transactions. They can be used to provide scope to operations on tables that are part of a larger transaction. For example, scheduling a trip in a reservation system might involve booking several different flights; if a desired flight is unavailable, you might roll back the changes involved in booking that one leg, without rolling back the earlier flights that were successfully booked." (MySQL, "MySQL 8.0 Reference Manual Glossary")
No comments:
Post a Comment