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Lecture Notes in Computer Science
An information system maintains a representation of the state of the domain in its Information Base (IB). The state of the IB changes due to the execution of the operations defined in the behavioral schema. There are two different approaches for specifying the effect of an operation: the imperative and the declarative approaches. In conceptual modeling, the declarative approach is preferable since it allows a more abstract and concise definition of the operation effect and conceals alldoi:10.1007/978-3-540-75563-0_15 fatcat:tm4evsrufjaddgjx4lqp6umevi