Understanding Oracle networking concepts

We rarely consider what actually goes on when we access data from our home computer. Take the example of signing up to use a site that allows us to order products online. We bring up the site in our web browser and navigate to the products we wish to purchase, which go into some kind of "shopping cart". If we are new to the site, we are usually prompted to enter information, such as our name, address, and date of birth, into a web form. When we fill out the form and click on Submit, a lot happens behind the scenes. To simplify it somewhat, when we click a button to submit our personal information, that data is passed to a web server over a network via the Internet. That web server passes the information to an application server, which does whatever logic it is designed for, and then passes the data to the database. The database processes the data request itself using resources from the host server and operating system. Then, the results are passed...