For more information, see Multiple Active Result Sets (MARS) in SQL Server.An explicit transaction is one in which you explicitly define both the start and end of the transaction through an API function or by issuing the Transact-SQL BEGIN TRANSACTION, COMMIT TRANSACTION, COMMIT WORK, ROLLBACK TRANSACTION, or ROLLBACK WORK Transact-SQL statements.We notice that the 'San Diego' entry has the wrong Sales and TXN_Date information. Using the same Store_Information table right above, what data is in the table after the following SQL statement is executed?
This is referred to as serializability because it results in the ability to reload the starting data and replay a series of transactions to end up with the data in the same state it was in after the original transactions were performed.
The programmer includes these modification statements in a single transaction so that the SQL Server Database Engine can enforce the physical integrity of the transaction.
It is the responsibility of an enterprise database system, such as an instance of the Database Engine, to provide mechanisms ensuring the physical integrity of each transaction.
By default, transactions are managed at the connection level.
When a transaction is started on a connection, all Transact-SQL statements executed on that connection are part of the transaction until the transaction ends.