The standard SQL commands to interact with relational databases are CREATE, SELECT, INSERT, UPDATE, DELETE and DROP. Following is a simple diagram showing the SQL Architecture − SQL Basic Commands These components are −Ī classic query engine handles all the non-SQL queries, but a SQL query engine won't handle logical files. There are various components included in this process.
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When you are executing an SQL command for any RDBMS, the system determines the best way to carry out your request and SQL engine figures out how to interpret the task.
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The first relational database was released by Relational Software which later came to be known as Oracle.ġ987 − SQL became the part of the International Organization for Standardization (ISO).
He described a relational model for databases.ġ974 − Structured Query Language (SQL) appeared.ġ978 − IBM worked to develop Codd's ideas and released a product named System/R.ġ986 − IBM developed the first prototype of relational database and standardized by ANSI. "Ted" Codd of IBM is known as the father of relational databases. SQL is widely popular because it offers the following advantages −Īllows users to access data in the relational database management systems.Īllows users to define the data in a database and manipulate that data.Īllows to embed within other languages using SQL modules, libraries & pre-compilers.Īllows users to create and drop databases and tables.Īllows users to create view, stored procedure, functions in a database.Īllows users to set permissions on tables, procedures and views.ġ970 − Dr.
All the Relational Database Management Systems (RDMS) like MySQL, MS Access, Oracle, Sybase, Informix, Postgres and SQL Server use SQL as their Standard Database Language. SQL is the standard language to communicate with Relational Database Systems. Though SQL is an ANSI (American National Standards Institute) standard language, but there are many different dialects of the SQL language like MS SQL Server is using T-SQL and Oracle is using PL/SQL. SQL was developed in the 1970s by IBM Computer Scientists and became a standard of the American National Standards Institute (ANSI) in 1986, and the International Organization for Standardization (ISO) in 1987.
SQL stands for Structured Query Language which is a computer language for storing, manipulating and retrieving data stored in a relational database. SQL is a language to operate databases it includes Database Creation, Database Deletion, Fetching Data Rows, Modifying & Deleting Data rows, etc.
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