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Persist data with Java Data Objects, Part 1

Grasp the qualities behind an ideal persistence layer

By Jacek Kruszelnicki, JavaWorld.com, 03/01/02

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Page 6 of 6

JDO: A strong persistence layer

This article provided an overview of object-relational issues and presented a list of requirements for the ideal persistence layer. While many proprietary products providing object-relational mapping are available, we need a standardized, open interface with multivendor support or a viable open source implementation. Two standardization and/or development efforts that meet these requirements have emerged: Sun's JDO and Castor JDO.

Stay tuned for Part 2 of this series, which will describe in more detail Sun's JDO and Castor JDO. I will discuss how they meet, or do not meet, the criteria for the ideal persistence layer. Part 2 will also compare JDO with other emerging persistence techniques, such as EJB CMP 2.0.

About the author

Jacek Kruszelnicki is president of Numatica Corporation, an information technology consulting firm providing expertise in information-systems strategy development, analysis, and planning; software development; and training. Jacek (pronounced Yatsek) received his master's degree in computer science from Northeastern University in Boston, Mass., and has more than 15 years' experience delivering maintainable, large-scale, distributed enterprise solutions.

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