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Hibernate version:
3.1
MySLQ version 3.4.1

I am using hibernate for our project.I am having a single class
public class sample{
int id ;
String name;
String userName;
boolean vaild;
// Zero argument constructor
//Getters ans setters
}

I need to make the combination of (id, name, userName, valid) as a unique key.
How can write my mapping hibernate.cfg.xml file ?

Thanks and regards,
Ary

this is all documented extremely well, and I think your posting in the wrong forum. You should post in the hibernate forum, instead of the Nhibernate forum ;-)