We look at the basic structure of a web application and how a web browser interacts with a web server. We explore the Request-Response Cycle that is the basis of the Hypertext Transfer Protocol (HTTP).

We explore how cookies work in the browser and how to set and read cookies in Django. We then explore how cookies are used to support sessions in Django and how we use sessions in Django.

Django has a built in capability to create and make use of user accounts. The built-in authentication and authorization system is quite robust. More advanced applications can replace the user model with their own model as long as thy meet the requirements of the rest of Django with respect to the authentication and authorization system.

Forms are the way that web applications present users with pages that areas to be filled in and sent to the server as data. Django has extensive support to simplify how we write code to interact with HTML forms.

As we design our data models, it is important to follow normal-form and not replicate string data. We do this by using multiple tables and making link between rows of two tables. The one-to-many pattern is one technique to replace data replication using links between rows in different tables.

In this lesson you will be presented with a sample application and you are to replicate its fuctionality. There is no new material - but you might want to review material to help with this assignment.