Searching across multiple entity beans

Hi,
Currently we are doing a school project that involve a search function that involves multiple entity beans. Is it alright to use a SQL query to do a search across multiple entity bean? Does it violate the J2EE Specification?
Is there any other way to do that?
And also can the Session Bean access database directly ?
Thanks and Regards,
Eng Chew

Never try that myself, but I think it would work.
Because in your dd, you'll create 2 entry for each
entity bean.
For example:    <entity>
      <description>This is entity b</description>
      <ejb-name>entityA</ejb-name>
      <home>company.EntityHome</home>
      <remote>company.Entity</remote>
      <ejb-class>company.EntityA</ejb-class>
      ... etc ...
    </entity>
    <entity>
      <description>This is entity b</description>
      <ejb-name>entityB</ejb-name>
      <home>company.EntityHome</home>
      <remote>company.Entity</remote>
      <ejb-class>company.EntityB</ejb-class>
      ... etc ...
    </entity>

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