June 2018
Beginner
722 pages
18h 47m
English
Content preview from Introduction to Programming
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Structured Query Language (SQL)
SQL is a rich language, and we do not have enough space to cover all its features. We just would like to enumerate a few of the most popular ones, so you become aware of their existence and can look them up as needed.
Similar to a Java statement, there is a SQL statement that expresses a database request like a complete sentence in the English language. Every statement can be executed either in a database console or by Java code using the JDBC connection. Programmers often test a SQL statement in a console before using it in the Java code because the turnaround in a console is much faster. One does not need to compile and execute a program while using a console.
There are SQL statements that create and delete ...
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