Hi,
WenJun Luo wrote:
>
> Hi,All,
> I know that in some design patterns entity beans are not exposed to the
>client tier. My problem is that in such case, why should we use entity beans. We can
>use DAO intstead and also can avoid the overhead of the inter-bean calls. Any tip is
>appreciated.
> Best regards.
Entity beans are not only used for wrapping DB-rows. You also use them
when you want concurent access to data at the app server level. They
also provide a better fine grained access controll than "session bean +
DAO". In some cases, they scale better than session beans.
/Francis
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