How do you build extensible data model

Question

I\'m thinking of building a ecommerce application with an extensible data model using NHibernate and Fluent NHibernate. By having an extensible data model, I have the abilit

Answer 1

Possible option would be to store all extra fields in an XML structure and use XPath/XQuery to retrieve them from the database. Each extensible entity in your application will have an XML field, like ExtendedData, which will contain all extra properties.