SQL

What is SQL ?

Structured query language.
SQL is used to communicate with a database.
According to ANSI (American National Standards Institute), it is the standard language for relational database management systems.
SQL statements are used to perform tasks such as update data on a database, or retrieve data from a database.
Some common relational database management systems that use SQL are: Oracle, Sybase, Microsoft SQL Server, Microsoft Access, Ingres, etc.

You can use SQL as a programmer to write apps using databases
Several users of a database can, via SQL, receive different views of the structure and content of the database; thus, SQL offers multiple data views.
People use SQL to create and manage databases and their security. SQL is a complete language for a database, and its main use is in retrieving, updating, and sharing data with more than one user.
You can use SQL in a 3-tiered internet architecture, including a database, a client, and an application server.
You can also use SQL to connect your clients or front-end computers and servers or back-end databases while supporting a solid client-server architecture.
SQL is widely considered a very desirable skill with many jobs such as web development, IT support, and business data analysts needed the skills in SQL.