Database servers are a cornerstone of modern businesses ranging from Google to 7-Eleven. When you run your credit card at a convenience or grocery store, your purchase is registered at a point of sale system backed by a database. Your credit card company registers the funds transfer into a database server containing your financial records. If you use a discount card, yet another database server comes into play. Databases enable businesses to track inventory, perform margin analysis, automate purchases, and identify customer trends—and to do all of this much more quickly and efficiently than ever before!