Abstract
We attempt to widen the scope in which object views are typically set, following the paradigms of programming languages rather than traditional database concepts, such as relational/object algebras or calculi. A well-known environment stack is used as a semantic basis for definitions of query operators. In this setting naming, scoping and binding are central issues and a virtual (non-materialised) database view is a stored function. A function output is a structure built upon atomic values, references and names. Such functions perfectly simulate virtual objects and virtual classes. The approach can be coupled with the query modification technique based on macro-substitution. It significantly reduces performance problems related to processing views. The approach is relevant to object query languages such as OQL.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
Abiteboul, S., Hull, R., Vianu, V. Foundations of Databases. Addison-Wesley, 1995.
Cluet, S. Designing OQL: allowing objects to be queried. Information Systems, 23 (5), pp. 279–305, 1998.
ODMG Team. The Object Database Standard ODMG, Release 2.0. R.G.G. Cattel (ed. ), Morgan Kaufmann, 1997.
Plodzien, J., Subieta, K. Optimization of Object-Oriented Queries by Factoring Out Independent Subqueries. Institute of Computer Science PAS, Report 889, Warsaw, 1999.
Plodzien, J., Kraken, A. Object query optimization in the stack-based approach. Proceedings of ADBIS Conference, Springer LNCS, 1691, pp. 303–316, 1999.
Plodzien, J. Optimization Methods in Object Query Languages. PhD Thesis, Institute of Computer Science Polish Academy of Sciences, Warsaw, 2000.
Rupp, S. A Critique of Release 2.0 of ODMG-93 Standard. http://gameboy.gia.rwth-aachen.de/odmgbugs.
dos Santos, C. S. Design and implementation of object-oriented views. Proceedings of DEXA Conference, Springer LNCS, 978, pp. 91–102, 1995.
Stonebraker, M. Implementation of integrity constraints and views by query modification. Proceedings of SIGMOD Conference, 1975.
Subieta, K. LOQIS: the object-oriented database programming system. Proceedings of East/West Database Workshop, Springer LNCS, 504, pp. 403–421, 1991.
Subieta, K. Object-Oriented Standards: Can ODMG OQL be extended to a programming language? In Cooperative Databases and Applications, World Scientific, pp. 459–468, 1997.
Subieta, K., Kambayashi, Y., Leszczylowski, J. Procedures in object-oriented query languages. Proceedings of VLDB Conference, pp. 182–193, 1995.
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2001 Springer Science+Business Media Dordrecht
About this chapter
Cite this chapter
Subieta, K., Plodzien, J. (2001). Object Views and Query Modification. In: Barzdins, J., Caplinskas, A. (eds) Databases and Information Systems. Springer, Dordrecht. https://doi.org/10.1007/978-94-015-9636-7_1
Download citation
DOI: https://doi.org/10.1007/978-94-015-9636-7_1
Publisher Name: Springer, Dordrecht
Print ISBN: 978-90-481-5657-3
Online ISBN: 978-94-015-9636-7
eBook Packages: Springer Book Archive