Caching for object database management systems

Caching is the retention of data, usually in the application, to minimize network traffic flow and/or disk access. With transparent persistence, caching is often set up as part of the application work space. With this cache, there is no need for the application to explicitly move objects from disk. They move from disk storage automatically into program memory. This is either as a result of a query or from traversing the graph structure. For an animation that demonstrates this caching, see transparent persistence (new window).

Caching for an ODBMS is similar in many respects as is caching for object-relational mapping. The exception is that that caching for object-relational mapping can have problems with cache synchronization (new window). This problem not occur with ODBMSs because the cache is tightly integrated with the ODBMS server.

ODBMSs provide the lowest cost for development and best performance combination when using objects because they store objects on disk and have the transparent program integration with object programming languages. Performance is enhanced by storing objects directly on disk which eliminates impedance mismatch (new window). Development costs are reduced because there is no need to program the caching for the application programs and there is only one model to develop (new window).

More on the general topic: Object database articles
	Object-oriented database management system (OODBMS) definition
	When an object database should be used
	ODBMS FAQ
	Architectures that use object database products
	Everyday uses of object databases
	ODBMS myths
	Object database problems?
	Article suggestions

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Object-oriented database management system (OODBMS) definition When an object database should be used ODBMS FAQ Caching for object database management systems Architectures that use object database products Everyday uses of object databases ODBMS myths Object database problems? Article suggestions

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Related books at Amazon.com

	Building an Object-Oriented Database System (The Morgan Kaufmann Series in Data Management Systems) by Francois Bancilhon, Claude Delobel, Paris Kanellakis Publisher: Morgan Kaufmann Publication Date: June 1992
	Inside the Database Object Model Average Customer Review: based on 4 reviews. Customer Review: This is by far the best book that I have seen on the details of how objects are used in relational databases. The text is well-written and easy to understand, and it greatly assisted me in understanding objects. Overall, an excellent book
	Database Systems: A Practical Approach to Design, Implementation and Management: AND Objects First with Java, a Practical Introduction Using BlueJ by Thomas Connolly, Carolyn Begg Average Customer Review: based on 3 reviews. Customer Review: This is an excellent book to use to teach students SQL in a very inexpensive way -- using Access. Although the book may not be in-depth enough for professionals, the authors do a great job of presenting the material in a very user friendly and systematic way for beginner students.
	Object-Oriented Application Development Using the Caché Postrelational Database by W. Kirsten, M. Ihringer, M. Kühn, B. Röhrig, A.S. Rudd Average Customer Review: based on 7 reviews. Customer Review: Have gotten extensive use out of this book from my time as a cache developer. Good guide for a programmer who's new to cache, and then later on as a reference guide for an intermediate to experienced developer. Everyone in the dev team got some use out of this as a reference - good to have in the team.
	Object-Oriented Database Design Clearly Explained by Jan L. Harrington Average Customer Review: based on 7 reviews. Customer Review: "Object Oriented Database Design" is a book for beginners and, as far as I have been able to investigate, it is a perfect walkthrough along the background of object structures. Figures, exemples, syntax of codes and clear explanations lead the learner through theory towards practice. Exemples are often very nice.

More related books: Search Amazon.com for object database

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