What is SQL?

SQL stands for Structured Query Language. SQL is a computer language used to interact with relational database systems. SQL is a tool for organizing, managing, and retrieving archived data from a computer database.

When data needs to be retrieved from a database, SQL is used to make the request. The DBMS processes the SQL query retrieves the requested data and returns it to us. Rather, SQL statements describe how a collection of data should be organized or what data should be extracted or added to the database.

In common usage, SQL encompasses DDL and DML commands for CREATE, UPDATE, MODIFY, or other operations on database structure.

SQL History

  • SQL was invented in 1970s and was first commercially distributed by Oracle.
  • The original name was given by IBM as Structured English Query Language, abbreviated by the acronym SEQUEL.

What is SQL?

Structured Query Language (SQL) is a specialized programming language for managing relational database data. It allows users to store, manipulate, and retrieve data efficiently in databases like MySQL, SQL Server, Oracle, and more.

In this article, we will learn about what is SQL? and check its characteristics, rules, uses, commands, etc.

Table of Content

  • What is SQL?
  • Components of a SQL System
  • What are the characteristics of SQL?
  • How SQL Works?
  • SQL Rules
  • What are SQL commands?
  • Uses of SQL
  • Why SQL?
  • SQL Injection
  • What is SQL Server?

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What is SQL?

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Components of a SQL System

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What are the characteristics of SQL?

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How SQL Works?

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SQL Rules

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What are SQL commands?

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Uses of SQL

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Why SQL?

SQL is an interactive question language. Users type SQL instructions into an interactive SQL software to retrieve facts and show them on the screen, presenting a convenient, easy-to-use device for ad hoc database queries.  SQL is a database programming language. Programmers embed SQL instructions into their utility packages to access the facts in a database. Both user-written packages and database software packages (consisting of document writers and facts access tools) use this approach for database access.  SQL is a client/server language. Personal computer programs use SQL to communicate over a network with database servers that save shared facts. This client/server architecture is utilized by many famous enterprise-class applications.  SQL is Internet facts access language. Internet net servers that interact with company facts and Internet utility servers all use SQL as a widespread language for getting access to company databases, frequently through embedding SQL databases get entry to inside famous scripting languages like PHP or Perl.  SQL is a distributed database language. Distributed database control structures use SQL to assist distribute facts throughout many linked pc structures. The DBMS software program on every gadget makes use of SQL to speak with the opposite structures, sending requests for facts to get entry to.  SQL is a database gateway language. In a pc community with a mixture of various DBMS products, SQL is frequently utilized in a gateway that lets one logo of DBMS speak with every other logo. SQL has for this reason emerged as a useful, effective device for linking people, pc packages, and pc structures to the facts saved in a relational database....

SQL Injection

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What is SQL Server?

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Conclusion

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