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Task H: Define Event Rule InformationYou use event rules to validate data and automatically trigger other events based on specific update and retrieval access to IMS tables. Event rules are always called when the table is accessed in the type of access specified. All rules applying to a specific access are executed in the order they appear in the scrollable Event Rule segment of the IMS Table Definition screen.
Database updates are prohibited during the validation process. The rule must be a function that returns Y (yes) if the validation is successful, N (no) if the validation is not successful, or a message explaining why it is not successful. There are no restrictions on coding, other than the rule must not be a function, it cannot change the contents of the triggering row, and it cannot use the TRANSFERCALL statement. Nested triggers are possible.
The type of access, or manipulation, to be performed on the data, causing the event to be executed.
TIBCO Object Service Broker Managing Data for more information on event rules.
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Copyright © TIBCO Software Inc. All Rights Reserved |