Versioning of entity values

Question

I'm looking for a way to version the values of my entities.

Examples:

• If I have a blog post I would like to save every version of it every time I change it.
• If I have a user account I would like to save the phone number and email every time the user changes it, such that I can access previous versions of the phone number and email.

Is there a special pattern for this?

How could it be implemented in C#?

Answer 1

Look at Jason Dentler's book (http://www.amazon.com/NHibernate-3-0-Cookbook-Jason-Dentler/dp/184951304X). Chapter 1. Handling versioning and concurrency describes how to mantain versioning. Book describes common approaches on using NHibernate ORM.

Good Luck!