MANY_MANY simple tutorial

The developers guide with the Relational Active Record section is great. It is full with a lot of information to digest.

I have been looking for a simple tutorial about MANY_MANY and I found one, so I thought of sharing it.

http://archive.cnblogs.com/a/1903358/

In this tutorial, we are using three tables, two for base requirement and third for relations.

It is a good one but what if we want to have a relation with two tables?

Could you illustrate what you mean.

Sorry, as to have many to many relations we need a third table for it.

Categories - Storing category related information

Products - Storing Products related Information

Category_products - Containing relational information about products and categories.

Thanks