With SQL (Structured Query Language) you can create tables within a database, add and delete data, query for information, change system settings, and trigger actions based on changes to the database. Whether you're a programmer, administrator, or database designer, Sams Teach Yourself SQL in 21 Days, Second Edition provides all the information needed to fully understand this powerful tool and use it to its fullest potential. Using step-by-step instructions, real-world examples, and expert advice, you'll improve your productivity and take your skills to new heights.

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