event 1. (software) An occurrence or happening of significance to a task or program, such as the completion of an asynchronous input/output operation. A task may wait for an event or any of a set of events or it may (request to) receive asynchronous notification (a signal or interrupt) that the event has occurred.
See also event-driven. 2. (data) A transaction or other activity that affects the records in a file. Last updated: 2000-02-09
