Product Documentation

FairCom ISAM for C

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Synchronous File Notification

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.

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