Write an OnUpdateRecord event handler to process updates that cannot be handled by a single update component, such as implementation of cascading updates, insertions, or deletions. This handler is also useful for applications that require additional control over parameter substitution in update components. 

DataSet is the name of the dataset to which updates are applied. 

UpdateKind indicates whether the current update is the insertion of a record, the deletion of a record, or the modification of a record. 

UpdateAction indicates the action taken by the OnUpdateRecord handler before it exits. On entry into the handler, UpdateAction is always set to uaFail. If OnUpdateRecord is successful, it should set UpdateAction to uaApplied before exiting. 

The code in an OnUpdateRecord handler must not call any methods that make a different record the current one.

CachedUpdates 

UpdateObject 

UpdateRecordTypes 

UpdatesPending 

OnUpdateError 

ApplyUpdates 

CancelUpdates 

CommitUpdates 

RevertRecord 

UpdateRecord 

UpdateStatus 

Using Multiple Update Objects 

Using the BDE to Cache Updates 

Using Update Objects to Update a Dataset