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EJB confusion

 
Greenhorn
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Hi,
I am just trying to get some basic EJB info. Currently, I am creating web applications using Websphere App Server 6.0 and using regular java beans. I would like to know what the benefits of using EJB's would be and if I can deploy them on Websphere 6.0. If so, does WAS 6 come ready to handle this or do I need a special version or download?

Thanks.
 
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Kathy,
In a web application, you typically use a session bean to wrap the data access layer. You can also optionally use an entity bean to access the database. The ejbs provide services such as transaction support.

WAS supports EJBs out of the box. In fact, any application server does. Only web servers (like Tomcat) do not support EJBs.
 
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Major advantages of EJBs are transaction management and concurrency.
 
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I normally say that if your app does not need distribution, transactions or messaging, then it probably does not need EJBs.
 
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