predicate
1. A Boolean logic term denoting a logical expression that determines the state of some variable(s). For example, a predicate can be an expression stating that "variable A must have the value 3." The control expression used in conjunction with condition variables is based upon a predicate. Use a condition variable to wait for some predicate to become true; for example, to wait for something to be in a queue.
2. Audit Service: The criteria used to select audit records in an audit trail file. This is used in creating audit trail analysis and examination programs that read a select number of records from the audit trail file.