Accessing and Changing Relational Data
Using Transactions with Distributed Queries
Microsoft® SQL Server™ 2000 supports transaction-based access to external data using the ITransactionLocal (local transaction) and ITransactionJoin (distributed transactions) OLE DB interfaces. Using distributed transactions, SQL Server ensures that a transaction involving multiple nodes is either committed or rolled back in all the nodes. If the provider does not support participating in a distributed transaction (does not support ITransactionJoin), only read-only operations are allowed against that provider when inside a transaction.
When a disallowed statement is encountered, the statement returns an error message and the user transaction, if any, terminates execution.