UltraLite ActiveX User's Guide
  Understanding UltraLite ActiveX Development
    Accessing and manipulating data using the table API

Transaction processing in UltraLite

UltraLite provides transaction processing to ensure the integrity of the data in your database. A transaction is a logical unit of work: either the entire transaction is executed, or none of it is executed.

By default, UltraLite operates in AutoCommit mode. In AutoCommit mode, each insert, update, or delete is executed as a separate transaction. Once the operation is completed, the change is made to the database.

If you set the ULConnection.AutoCommit property to false, you can use multi-statement transactions. For example, if your application transfers money between two accounts, the deduction from the source account and the addition to the destination account constitute a single transaction.

If AutoCommit is set to false, you must execute a ULConnection.Commit statement to complete a transaction and make changes to your database permanent, or you must execute a ULConnection. Rollback statement to cancel all the operations of a transaction.

Turning AutoCommit off improves performance.