Abstract. Access control for semi-structured data is nontrivial, as witnessed by the number of access control approaches in recent literature. Recently a case has been made for exp...
Precedence constraints play a crucial role in planning and scheduling problems. Many real-life problems also include dependency constraints expressing logical relations between the...
Abstract Although e-commerce is becoming popular, product rules, which describe various conditions such as prices, applicability, and discount conditions are still expressed in nat...
A constraint expresses a relationship among one or more variables. Constraints are very useful in the development of collaborative applications, such as collaborative CAD and CASE ...
Kai Lin, David Chen, Chengzheng Sun, R. Geoff Drom...
The Object Constraint Language OCL is a textual specification language that could be used for constraining the modelling elements that occur in UML diagrams. Typical constraints i...