The shopping cart application shows the use of many of the database and middleware software features you have learned about in this book. It also gives you a project to build on both to test and enhance your skills and produce an application to suit your requirements.
As you know from doing online shopping, the customer information should have some type of password control. Similarly, the ability to add new products should be restricted to authorized store personnel. You can use your HTML, PHP, and ASP knowledge (see the Exercises and also look ahead to Chapter 16, Scaling Up Your Application) to add features to this project.