Preface
Databases are all around us. Almost every website we visit and nearly every store we shop at has a database (or several) working quietly behind the scenes. The same goes for banks, hospitals, government agencies, theaters, doctors, hospitals, amusement parks, and police departments. All use databases to store, sort, and analyze their own particular information.
This information comes in many forms and can be anything that can be stored electronically inside a computer. This includes books, catalogs, addresses, names, dates, finances, pictures, money, passwords, documents, preferences, tweets, posts, likes, blogs, articles, and much more. Databases are one of the foundational pillars of the modern electronic world.
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