In this chapter, we’ll dig much deeper into Django’s models and comprehensively explore the essentials.

In the first section of the chapter, we’ll explore the common data management functions built into Django. We’ll cover common model methods that return QuerySets (and those that don’t), model field lookups, aggregate functions, and building complex queries.

In later sections of the chapter, we’ll cover adding and overriding model managers and model methods, and have a look at how model inheritance works in Django.