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2. Rollback (data management) - Wikipedia

   en.wikipedia.org/wiki/Rollback_(data_management)

   SQL refers to Structured Query Language, a kind of language used to access, update and manipulate database. In SQL, ROLLBACK is a command that causes all data changes since the last START TRANSACTION or BEGIN to be discarded by the relational database management systems (RDBMS), so that the state of the data is "rolled back" to the way it was before those changes were made.

3. Savepoint - Wikipedia

   en.wikipedia.org/wiki/Savepoint

   A savepoint is a way of implementing subtransactions (also known as nested transactions) within a relational database management system by indicating a point within a transaction that can be "rolled back to" without affecting any work done in the transaction before the savepoint was created. Multiple savepoints can exist within a single ...

4. Compensating transaction - Wikipedia

   en.wikipedia.org/wiki/Compensating_transaction

   For systems without a commit/rollback mechanism available, one can undo a failed transaction with a compensating transaction, which will bring the system back to its initial state. Typically, this is only a workaround which has to be implemented manually and cannot guarantee that the system always ends in a consistent state.

5. Database transaction - Wikipedia

   en.wikipedia.org/wiki/Database_transaction

   A database transaction symbolizes a unit of work, performed within a database management system (or similar system) against a database, that is treated in a coherent and reliable way independent of other transactions. A transaction generally represents any change in a database. Transactions in a database environment have two main purposes:

6. Salesforce.com Takes a Shot at Oracle with New Database.com - AOL

   www.aol.com/2010/12/07/salesforce-com-takes-a...

   One of the best-performing stocks over the past six years has been Salesforce.com (CRM). During this time, its share price has gone from about $10 to $150, with a market cap now close to $20 billion.

7. Commit (data management) - Wikipedia

   en.wikipedia.org/wiki/Commit_(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 (or BEGIN TRANSACTION , depending on the database vendor) statement, one or more SQL statements, and then the COMMIT statement.