Triggers, security and authorization in SQL. Niki Sardjono CS 157A sect 2 Prof. S. M. Lee. Trigger. Statement that the system executes auto. As a side effect of a modification to the database. Requirements : When a trigger is executed.
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CS 157A sect 2
Prof. S. M. Lee
This graph means that U4 is given authorization only by U1, and U5 got the authorization from both U1 and U2. If authorization is revoked for U1, U4 will lose it too, but U5 will not.