You can carry out transaction processing with Microsoft SQL Server in three ways:
AutoCommit—Every Transact-SQL statement is its own transaction and automatically commits when it finishes. This is the default mode in which SQL Server operates.
Explicit—This approach provides programmatic control of the transaction using the BEGIN TRAN and COMMIT/ROLLBACK TRAN/WORK commands.
Implicit—SQL Server is placed into a mode of operation in which issuing certain SQL commands automatically starts a transaction. The developer must finish the transaction by explicitly issuing the COMMIT/ROLLBACK TRAN/WORK commands.
Each of these methods is discussed in the following sections.
The terms for explicit and implicit transactions can be ...