rse A record selection expression. A phrase that defines specific conditions that individual records must meet before Oracle Rdb includes them in a record stream. on-error The ON ERROR clause. Specifies host language statement(s) to be performed if an error occurs during the FOR loop. For more information see the entry on ON ERROR. statement Any valid RDML or host language statement to be executed within the FOR loop. Use a semicolon (;) at the end of each RDML, Pascal, or C statement. handle-options A request handle, a transaction handle, or both. REQUEST_HANDLE var The REQUEST_HANDLE keyword followed by a host language variable. A request handle identifies a compiled Oracle Rdb request. If you do not supply a request handle explicitly, RDML associates a unique request handle for the compiled request. TRANSACTION_HANDLE The TRANSACTION_HANDLE keyword followed by var a host language variable. A transaction handle identifies a transaction. If you do not supply a transaction handle explicitly, RDML uses the default transaction handle.