In this chapter, we have learned about:
Magento Models, their inheritance, and purpose
How Magento uses resource and collection models
The EAV model and its importance within Magento
How the EAV works and the structure that is used inside the database
What the Magento ORM model is and how it is implemented
How to work with Direct SQL and the Magento resource adapter
The chapters so far have been more theoretic than practical; this has been done with the intention of guiding you through the complexity of Magento and providing you with the tools and knowledge that you will require for the rest of the book. For the rest of the book, we will take a more hands-on approach and start building extensions incrementally, applying all the concepts we have learned so far.
In the next chapter, we will start getting our feet wet and develop our first Magento extension.