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Enterprise J2ME™: Developing Mobile Java™ Applications by Michael Juntao Yuan

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Chapter 12. Mobile Databases for MIDP Devices

CHAPTER OVERVIEW

  • PointBase Micro Edition

  • The Oracle J2ME SODA SDK

  • The IBM DB2e FastRecordStore

On MIDP devices, full relational databases prove to be too expensive. The standard MIDP does not even support basic SQL types such as the Float type. On the other hand, the standard persistent storage facility (i.e., the RMS) on the MIDP is terribly inadequate for enterprise applications. RMS stores are very slow. They are neither indexable nor searchable. RMS’s linear structure makes it a pain to handle relational or object data.

To address this problem, database vendors have developed simple database solutions on top of the RMS. Since those databases are extremely lightweight, full support for the JDBC API is ...

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