[PDF] NHibernate Reference Documentation

What is NHibernate and how does it work?

Working with object-oriented software and a relational database can be cumbersome and time consuming in today's enterprise environments. NHibernate is an object/relational mapping tool for .NET environments.

How to insert 100 000 rows in the database using NHibernate?

A naive approach to inserting 100 000 rows in the database using NHibernate might look like this: using (ISession session = sessionFactory.OpenSession()) using (ITransaction tx = session.BeginTransaction()) { for (int i = 0; i < 100000; i++) { Customer customer = new Customer(.....); session.Save(customer); } tx.Commit(); }

How to avoid duplication in NHibernate?

If you want to avoid duplication, consider using XML entities (by example[ ]in theDOCTYPEdeclaration and &allproperties;in the mapping). The disadvantage of this approach is that NHibernate does not generate SQLUNIONs when performing poly- morphic queries.