SQL Logo

SQL (Structured Query Language) is a programming language used to manage and manipulate relational databases.

History of SQL

SQL was first developed by IBM in the 1970s to manipulate data stored in their database management system (DBMS) called System R. Oracle Corporation then developed SQL commercially for their DBMS in the late 1970s. The American National Standards Institute (ANSI) published a standard version of the SQL language in 1986, followed by the International Organization for Standardization (ISO) in 1987.

Features of SQL

SQL provides a standardized way to manipulate relational databases. It allows programmers to do the following:

• Create tables and modify their structure
• Insert, update, delete data in tables
• Query data from tables using SELECT statements
• Filter and sort data using WHERE and ORDER BY clauses
• Join data from multiple tables using JOIN clauses
• Create views and stored procedures
• Manage user access to data using user and role permissions

SQL Dialects

There are several dialects of SQL that are specific to certain DBMSs, including:

• MySQL
• PostgreSQL
• Oracle SQL
• Microsoft SQL Server
• SQLite

Although each dialect has its specific syntax and functionality, the basic structure and concepts of SQL remain the same.

Conclusion

SQL is a powerful language that allows programmers to manage and manipulate relational databases. Its standardized way of working with data has made it a popular choice for developers and DBAs alike.

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# SQL Logo

![SQL Logo](https://upload.wikimedia.org/wikipedia/commons/thumb/2/29/Postgresql_elephant.svg/1200px-Postgresql_elephant.svg.png)

SQL (Structured Query Language) is a programming language used to manage and manipulate relational databases.

## History of SQL

SQL was first developed by IBM in the 1970s to manipulate data stored in their database management system (DBMS) called System R. Oracle Corporation then developed SQL commercially for their DBMS in the late 1970s. The American National Standards Institute (ANSI) published a standard version of the SQL language in 1986, followed by the International Organization for Standardization (ISO) in 1987.

## Features of SQL

SQL provides a standardized way to manipulate relational databases. It allows programmers to do the following:

- Create tables and modify their structure
- Insert, update, delete data in tables
- Query data from tables using SELECT statements
- Filter and sort data using WHERE and ORDER BY clauses
- Join data from multiple tables using JOIN clauses
- Create views and stored procedures
- Manage user access to data using user and role permissions

## SQL Dialects

There are several dialects of SQL that are specific to certain DBMSs, including:

- MySQL
- PostgreSQL
- Oracle SQL
- Microsoft SQL Server
- SQLite

Although each dialect has its specific syntax and functionality, the basic structure and concepts of SQL remain the same.

## Conclusion

SQL is a powerful language that allows programmers to manage and manipulate relational databases. Its standardized way of working with data has made it a popular choice for developers and DBAs alike.