Hi

I have successfully created a many-to-many mapping with NHibernate using 2 classes and 3 tables (one for the mapping) - everything works as expected.

However, when my collection is persisted to the database, it appears that NHibernate deletes all entries in my mapping table and recreates them from scratch, even though I may have only added or removed one item.

Can someone confirm if this is how NHibernate actually functions, and if so, is there a way to optimise this process?

Cheers

Ok- found the answer. I should have been using an <idbag> :-)