What is a 'Bag' and a 'Set' in nHibernate?

Question

Using Fluent NHibernate, I come across the mapping AsBag() and AsSet() for HasMany and HasManyToMany relationships. I've done some searches, and I'm just not finding anything. Can anyone explain to me what these mean, and what the significance is?

Answer 1

The post here succinctly explains the differences.

In summary, they are both unordered collections:

• Set => Item may not occur more than once
• Bag => Items may occur more than once

Answer 2

Check out this SO article: List vs Set vs Bag in NHibernate