Welcome to Web Applications! In this course, we are going to learn how to build web applications, more commonly called websites. Building web applications requires expertise in many subdisciplines of computer science. For example, a web application is a computer program, which means we need to know how to write programs. In this course, we are going to use Python. Also, many web applications store information in databases, which means we need to know how to talk to databases. Finally, web applications talk to the database and clients by sending messages over a computer network, which requires some expertise in computer networking and operating systems.

Thankfully, as long as you have taken the pre-requisite courses, you should be more than ready to take on this task.

We will begin this course by introducing two more topics: HTTP and HTML. We have already seen HTTP in the OS course, but we are going to expand on it with new HTTP methods, headers, and different types of response codes. HTML is the standard format for presenting output from a web application.