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An action or occurrence detected by a program. Events can be user actions, such as clicking a mouse button or pressing a key, or system occurrences, such as running out of memory. Most modern applications, particularly those that run in Macintosh and Windows environments, are said to be event-driven, because they are designed to respond to events.

A database event can be anything relative to the rows in a table or values in fields. Coordinated and monitored by the Firebird/InterBase Event Manager.