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# Session Bean Applications

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Session beans generally model a process, operation, or service and as such, are not persistent. You can build TopLink applications that wrap interaction with TopLink in session beans. Session beans execute all TopLink-related operations on behalf of the client.This type of design uses JTS and externally managed transactions, but does not incur the overhead associated with CMP applications. Session bean applications also scale and deploy easily.

Session bean applications require the following deployment files:

- project.xml File

- sessions.xml File