File notification gives your c-tree application the ability to respond to a variety of events. With the proper handling of these events, you can enable such robust features as syncing data between servers in a replicated fashion, or triggering security and auditing actions based upon a specified file event.
Each notification message includes the following details:
The type of operation (add, delete, or update)
For a transaction-controlled file, the transaction number in which the change occurred
The record offset of the modified record.
The following optional information can also be included in notification messages:
The unique key value involved in the operation. (An update may return both old and new key values.)
The record image involved in the operation. (An update may return both old and new record images.)
The node name of the client that performed the operation.