MySQL NDB Cluster API Developer Guide
The procedure for using transactions is as follows:
Start a transaction (instantiate an
NdbTransaction object).
Add and define operations associated with the transaction
using instances of one or more of the
NdbOperation,
NdbScanOperation,
NdbIndexOperation, and
NdbIndexScanOperation
classes.
Execute the transaction (call
NdbTransaction::execute()).
The operation can be of two different
types—Commit or
NoCommit:
If the operation is of type
NoCommit, then the application
program requests that the operation portion of a
transaction be executed, but without actually
committing the transaction. Following the execution of
a NoCommit operation, the program
can continue to define additional transaction
operations for later execution.
NoCommit operations can also be
rolled back by the application.
If the operation is of type Commit,
then the transaction is immediately committed. The
transaction must be closed after it has been committed
(even if the commit fails), and no further operations
can be added to or defined for this transaction.