EntityBean ususally persist to a Table in a DB.

jabber (jabber)
Sometimes, people may ask it to associated with a View in DB. Headaches are here...

Some people try to avoid mapp an Entitybean to a View in DB. They choose to desigb bigger tables.

One of my friends has ever designed a table with 16 column because his EntityBean has 16 attributes. I did not dispute with him because he is my friends. But I do think his design is problamatic. From my perspective, a Table iwth 16 columns is likely to be a poorly normalized one.

Many people are doing EJB projects but the performance is generally poor.

I don't think you need finsih the whole book.
EJB Specification is a reference, not a textbook. I think following some examples shipped with EJB container is more useful than going through the whole book.

2000-12-4 -04:00

回到话题: Dear Jabber, Could you please give me a hand?(also about EJB)

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