SQL (Structured Query Language) enables us to create tables, apply constraints, and manipulate data in a database. In this book we will concentrate on queries that allow us to extract information from a database by describing the subset of data we need. That data might be a single number , such as a product price, a list of the names of members with overdue subscriptions, or a calculation, ...
© Clare Churcher 2016
Clare Churcher, Beginning SQL Queries, 10.1007/978-1-4842-1955-3_1
1. Relational Database Overview
Clare Churcher1
(1)Studio B Productions, Great Neck, New York, USA
Electronic supplementary material
The online version of this chapter (doi:10.1007/978-1-4842-1955-3_1) contains supplementary material, which is available to authorized users.
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