how do I create a hbm.xml file with out any primary key

u_shankar · **Joined:** Mon Nov 17, 2003 5:52 pm **Posts:** 2

Hi

I have a question my take has four fields

name
age
sex
address

different names used for easy understanding I have a bean created with setters and getters, I need to create a hbm.xml file for this, but my problem is that I have no primary key defined can I do anything this fancy.

The realtime table is used just to dump the data read and clean so that's the reason why no pk has been specified. Can anyone help me please?

Appreciate ur help..........)

christian · **Posted:** Mon Nov 17, 2003 6:00 pm

A relational database requires a primary key to avoid duplicates and all the problems that come with them. Use a surrogate key.

u_shankar · **Joined:** Mon Nov 17, 2003 5:52 pm **Posts:** 2

Hi

this is a question to the previous forum don't think as dumb but trying to understand the concepts of hibernate so could you pls sgive me an examples of how it should look. that would help a lot.

thanks

Brannor McThife · **Posted:** Tue Nov 18, 2003 12:59 am

Possibly make a complex-id using all 4 fields? IFF such a thing can be unique.

-G

christian · **Posted:** Tue Nov 18, 2003 10:35 am

A surrogate key is not a concept of Hibernate, but of sound database design princicples. Search on Google.