title: NHibernate SchemaUpdate
body: <p>From personal experience, as well as everything I've read, NHibernate's SchemaUpdate doesn't support removing columns and tables.  I'd like to use SchemaUpdate to generate migration DDL, but not having the deletes is making it more difficult.  How do you get around this?  Are there other tools that would help to keep the focus on the domain layer when making changes that affect the database?</p>
  
  <p>Are there any tools out there that work like SchemaUpdate (where I could point the tool to my entities and current version of the database, and have it generate the change scripts)?  </p>