VLODS: a VLSI object oriented database system
Information Systems
Object-oriented databases: a semantic data model approach
Object-oriented databases: a semantic data model approach
Object-oriented databases
Object-oriented database design clearly explained
Object-oriented database design clearly explained
Instant UML
Introduction to Database Systems
Introduction to Database Systems
An Object-Oriented Database System Jasmine: Implementation, Application, and Extension
IEEE Transactions on Knowledge and Data Engineering
ADOME: An Advanced Object Modeling Environment
IEEE Transactions on Knowledge and Data Engineering
Consistency Checking in Complex Object Database Schemata with Integrity Constraints
IEEE Transactions on Knowledge and Data Engineering
Integrity Maintenance in Object-Oriented Databases
VLDB '92 Proceedings of the 18th International Conference on Very Large Data Bases
«UML» '98 Selected papers from the First International Workshop on The Unified Modeling Language «UML»'98: Beyond the Notation
Modelling Constraints with Exceptions in Object-Oriented Databases
ER '94 Proceedings of the13th International Conference on the Entity-Relationship Approach
On Formalizing the UML Object Constraint Language OCL
ER '98 Proceedings of the 17th International Conference on Conceptual Modeling
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Modeling of constraints in Object Oriented Data Model has been the focus of attention of many researchers in recent times [1, 2, 8, 13, 14]. In this paper, we attempt to further formalize the constraint model described in [3]. First, necessary extensions of UML meta-model is examined to express the constraint-model of [3]. The motivation behind expressing constraint models in UML is formalization. It is expected that such formalization effort would lead to the development of sound software tools for analysis and synthesis. The second objective is to establish the correspondence between the extended model and a standard Object database model developed by ODMG. This correspondence is established in ODL by extending the standard specified by ODMG. Such formalizations not only shows the expressive power of the model but these correspondences do also enhance the portability of the schema of object oriented databases across different vendors.