Integration of Integrity Constraints into Object-oriented Database Schema According to Odmg-93

In this paper we present a new approach for embedding integrity constraints into object-oriented database systems (ODBMS), which can not be speciied implicitly by the structure or explicitly by key words of the system. For the design of an object-oriented schemas a variety of existing techniques can be used, which are mainly based on conceptual design using a semantic database model. The transformation of the semantic model or of one of the traditional data models into an object-oriented schema is investigated in several proposals. Recently a standard for object-oriented systems was proposed. The unsolved problem in these transformations and in object-oriented design in general is the integration of those unregarded integrity constraints into the behavioral part of the schema. This is accomplished by our new approach, DICE. By example we describe the integration of DICE into an object-oriented schema according to ODMG-93 proposal. Additionally, previous approaches are surveyed and compared to DICE.