WebSphere Application Server Network Deployment, Version 6.0.x   Operating Systems: AIX, HP-UX, Linux, Solaris, Windows
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Database restrictions for EJB query

The Enterprise JavaBeans (EJB) query functions must adhere to certain restrictions for databases. This section describes the restrictions.

General database restriction

All of the enterprise beans involved in a given query must map to the same data source. The EJB query does not support cross-data source join operations.

Specific database restrictions

Different database products place different restrictions on elements that can be included in EJB query statements. Following is a list of those restrictions; check with your database administrator to see if any apply in your environment:




Related concepts
EJB query language
EJB query compatibility issues with SQL
Rules for data type manipulation in EJB query
Related tasks
Using EJB query
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Last updated: Mar 8, 2007 8:14:28 PM CST
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