Investigations on Object Constraints in Unified Software Development Process

The Object constraints can be described as the expressions that are used to insert important data in object oriented models. The Object Management Group founded a worldwide standard for object-oriented analysis and design artifacts specifically the diagrams. The specification and standard, known as the Unified Modeling Language, comprises model diagrams and the allied and associated semantics. Unified Modeling Language is meant for modeling and, the Object Constraint Language is the specification and standard for specifying expressions. These expressions add essential, crucial and critical information to object-oriented models and other object modeling workproducts. In Unified Software Development Process we have analysis & Design discipline to have complete architecture and design of the system. Analysis & Design discipline is followed by implementation discipline. The activities of the implementation phase are mainly captured in construction phase. In unified software development life cycle the expressions in the design model are forward engineered to produce or generate the source code. The source code that is generated depends a lot on the platform and the technology that are selected for the software development. We have investigated how the expressions are developed and incorporated in the models in an electronic business solution. Further object constraint language is used to form the expressions that are attached to the object oriented model and artifacts. Then models are forward engineered to generate the code. In a nutshell we produce code from abstract, models or diagrams making use of object constraints language that is to achieve round trip engineering format between model and code. In this paper we have generated expressions from object constraint perspective for a reward point system as applied to a customer in e-business. We have also evolved the Context Definition, Initial Values & Derivation Rules, Query Operations, Attributes and Operations in this regard.