In a frame, a trigger is a short procedure that can be triggered whenever a slot is created, modified or accessed.

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In the context of frames in artificial intelligence and knowledge representation, a trigger is not specifically defined. The concept of a trigger is more commonly associated with databases, where it is a procedural code that is automatically executed in response to certain events on a particular table or view in a database. In frames, the focus is on slots (attributes or properties) and their values, not on procedural code execution triggered by changes.

In a Frame, a Trigger Is a Short Procedure That