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Basic SQL

Just as your savings account would be useless without a valid ID or bank card to get to that money, information contained within a database is useless data unless you have the means of extracting it. SQL is the language that does just that; it allows for quick and complex access to the data contained in your database through the use of queries. Queries pose the questions and return the results to your application, usually in the form of a recordset.

Caution

Don't think of SQL as simply a way of extracting information. The SQL language can be complex, allowing not only queries from a database, but can add, modify, and delete information from a database as well.



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