What is sql?

What is sql and what does sql stand for?

SQL /S Q L/ stands for Structured Query Language.
An industry-standard language for creating, updating and, querying relational database management systems.

SQL was developed by IBM in the 1970s for use in System R,which was a database system built as a research project.

Since then, SQL grew into so many dialects. U.S and International standards organizations have attempted to come up with a standard language. An initial standard called ISO-ANSI was released, but major RDBMS have grown and continued to improve the SQL and it tends to lead the standard rather than to follow it.

Today there are many different flavors of SQL. This is due to two reasons:

  1. The SQL standard is fairly complex, and it is not practical to implement the entire standard.
  2. Each database vendor needs a way to differentiate its product from others.

In this tutorial, the sql server syntax is adopted. Other flavor is Oracle, here is one of the best site to learn about using SQL with Oracle databases.

See the next page Preparing Work Space to setup your own environment so that you can practice or do some experiments.

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