27.4. Updategrams
Database data can be modified using Updategrams. Suppose you want to delete a reservation that was previously created. You use an Updategram to accomplish this. Updategrams can be used to insert, edit, or delete data from the database. Listing 27.6 shows an example of an Updategram. In the listing the before element has data but the after has none. The result is the deletion of the row specified.
Listing 27.6. Removing a Reservation
<removeReservation xmlns:updg="urn:schemas-microsoft-com:xml-updategram"> <updg:header> <updg:param name="rid"/> </updg:header> <updg:sync> <updg:before updg:returnid="record"> <reservation updg:at-identity="record" id_reservation="$rid"/> </updg:before> <updg:after/> </updg:sync> </removeReservation> ... |
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