Example: XML export for update
Here is an example of a constraint that calls the XML export method, and updates a database column with the result of the INVOKE statement.
Whenever a person is updated, the fact that this PERSON record is updated is stored in XML format in the XMLupdate column of the PERSON_XML_LOG table.
After an update of "John Smith" to "Johnny Smith", the XMLupdate column of the PERSON_XML_LOG table contains:
•The 'Update' execution type is only useful in constraints in combination with old values.
•The execution type is the same for all exported row elements.