SQL is the language that you use to manipulate relational data. Other languages for data manipulation do exist, but SQL is the most common, and it's the reason for the "SQL" in "SQL*Plus." Because everything you do in SQL*Plus will involve SQL, it's worth digressing for a chapter to focus on learning the rudiments of the language.
Oracle SQL*Plus: The Definitive Guide (Definitive Guides)
Authors: Jonathan Gennick
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