What is SQL?

What is SQL?

SQL is the structured query language used to store, manipulate and retrieve data in a related database. SQL is a computer language.

SQL is the Relational Database System's standard language. With all RDMS platforms such as MySQL, MS Access, Oracle, Sybase, Informix, Postgres and SQL Server, SQL is the standard database interface.

Also, they use different dialects such –

  • MS SQL Server,
  • Oracle, JET SQL (native format),
  • MS Access version of SQL, etc.

Why SQL?

SQL is popular because it gives the following benefits -

  • Enables users in connection database management systems to access data.
  • Allows data description for users.
  • Will enable users to define and manipulate data in a database.
  • It will enable SQL modules, libraries and pre-compilers to embed into other languages.
  • Enables users to create and drop tables and databases.
  • Allows users to construct view, save process, database functions.
  • Allows users to set tables, procedures and views permissions.

SQL Process

The system determines the optimal way to complete your request when executing a SQL query for any RDBMS, and the SQL engine determines how to understand the task.

This method includes numerous components.

  • Query Dispatcher
  • Optimization Engines
  • Classic Query Engine
  • SQL Query Engine and more.

All the non-SQL requests are handled by a classical query engine, but a SQL query engine handles no logical files.