DBMS

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SQL (Structured Query Language) is a computer language aimed to store, manipulate, and query data stored in relational databases. The first incarnation of SQL appeared in 1974, when a group in IBM developed the first prototype of a relational database. The first commercial relational database was released by Relational Software (later becoming Oracle).

SQL Tutorial - SQL Query Reference and Programming Examples

http://www.1keydata.com/sql/sql.html

SQL Commands - SQL Commands Reference

SQL Commands is a website demonstrating how to use the most frequently used SQL clauses. SQL Commands is not a comprehensive SQL Tutorial, but a simple guide to SQL clauses available online for free. Our SQL Commands reference will show you how to use the SELECT, DELETE, UPDATE, and WHERE SQL commands. http://www.sqlcommands.net/
http://sqlzerotopro.com/

SQL Tutorial

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