Development and implementation of an object-oriented DBMS
Research directions in object-oriented programming
Combining language and database advances in an object-oriented development environment
OOPSLA '87 Conference proceedings on Object-oriented programming systems, languages and applications
Object-oriented concepts, databases, and applications
Features of the ORION object-oriented database system
Object-oriented concepts, databases, and applications
A model of queries for object-oriented databases
VLDB '89 Proceedings of the 15th international conference on Very large data bases
OQL: a query language for manipulating object-oriented databases
VLDB '89 Proceedings of the 15th international conference on Very large data bases
An object-oriented query algebras
Proceedings of the second international workshop on Database programming languages
Object-Oriented Databases: Definition and Research Directions
IEEE Transactions on Knowledge and Data Engineering
Queries in Object-Oriented Databases
Proceedings of the Fourth International Conference on Data Engineering
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In this article we express some ideas on how to select an arbitrary set of objects, or to combine objects and information in the objects, in an arbitrary way. In the following will an object-oriented database be thought of as a collection of sets. The sets are collections of objects which all share a common message protocol. Operations originating from relational algebra are defined on these sets. To make the retrieval of objects efficient, a storage strategy for objects is developed. Combination of objects and changes in the objects' message protocol as a result of a retrieval request, are solved by a filtering mechanism.