Algebraic optimization of object-oriented query languages
ICDT '90 Proceedings of the third international conference on database theory on Database theory
Algebraic support for complex objects with arrays, identity, and inheritance
SIGMOD '91 Proceedings of the 1991 ACM SIGMOD international conference on Management of data
Conceptual database design: an Entity-relationship approach
Conceptual database design: an Entity-relationship approach
A general framework for the optimization of object-oriented queries
SIGMOD '92 Proceedings of the 1992 ACM SIGMOD international conference on Management of data
Object-oriented analysis and design with applications (2nd ed.)
Object-oriented analysis and design with applications (2nd ed.)
Converting relational to object-oriented databases
ACM SIGMOD Record
The object data standard: ODMG 3.0
The object data standard: ODMG 3.0
A Query Algebra for Object-Oriented Databases
Proceedings of the Sixth International Conference on Data Engineering
Bulk-Loading Techniques for Object Databases and an Application to Relational Data
VLDB '98 Proceedings of the 24rd International Conference on Very Large Data Bases
The Use of Information Capacity in Schema Integration and Translation
VLDB '93 Proceedings of the 19th International Conference on Very Large Data Bases
A catalog of object model transformations
WCRE '96 Proceedings of the 3rd Working Conference on Reverse Engineering (WCRE '96)
Re-engineering relational databases: the way forward
Proceedings of the 2011 International Conference on Intelligent Semantic Web-Services and Applications
Migration integrity rules in open systems
AWIC'05 Proceedings of the Third international conference on Advances in Web Intelligence
| Hi-index | 0.00 |
Relational database systems represent the current standard technology for implementing database applications. Now that the object-oriented paradigm becomes more and more mature in all phases of the software engineering process, object-oriented DBMS are seriously considered for the seamless integration of object-oriented applications and data persistence. However, when reengineering existing applications or constructing new ones on top of relational databases, a large semantic gap between the new object model and the legacy database's model must be bridged. We propose database migration to resolve this mismatch: the relational schema is transformed into an object-oriented one and the relational data is migrated to an object-oriented database. Existing approaches for migration do not exploit the full potential of the object-oriented paradigm so that the resulting object-oriented schema still "looks rather relational" and retains the drawbacks and weaknesses of the relational schema. We propose a redesign environment which allows to transform relational schemas into adequate object-oriented ones. Schemas and transformation rules are expressed in terms of a new data model, called semi object types (SOT). We also propose a formal foundation for SOT and transformation rules. This formalization makes it possible to automatically generate the data migration process.