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SQL Tutorial

STRUCTURE QUREE LANGUAGE

SQL tutorial gives unique learning on Structured Query Language and it helps to make practice on SQL commands which provides immediate results. SQL is a language of database, it includes database creation, deletion, fetching rows and modifying rows etc.

SQL is an ANSI (American National Standards Institute) standard, but there are many different versions of the SQL language.

What is SQL?

SQL is Structured Query Language, which is a computer language for storing, manipulating and retrieving data stored in relational database.

SQL is the standard language for Relation Database System. All relational database management systems like MySQL, MS Access, Oracle, Sybase, Informix, postgres and SQL Server use SQL as standard database language.

Also, they are using different dialects, such as:

  • MS SQL Server using T-SQL,
  • Oracle using PL/SQL,
  • MS Access version of SQL is called JET SQL (native format) etc.
Why SQL?
  • Allows users to access data in relational database management systems
  • Allows users to describe the data.
  • Allows users to define the data in database and manipulate that data
  • Allows to embed within other languages using SQL modules, libraries & pre-compilers
  • Allows users to create and drop databases and tables.
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