Structured Query Language

SQL stands for Structural query language. It was initially named a Structured English Query Language developed addition (SEQUEL). Eventually, the name changed to SQL. According to the American national standards institute, it is the standard language for relational database management systems.SQL lets you access and manipulate databases. In the early 1970’s Donald D. Chamberlain at IBM developed and produced SQL.

SQL (Structured Query Language) is a programming language used for managing data stored in a relational database management system (RDBMS). An SQL database is a type of database that uses the SQL language for managing data in tables and relationships between those tables.

In an SQL database, data is organized into tables, which are made up of columns and rows. Each column represents a specific type of data, such as a person’s name, age, or address. Each row represents a unique instance of that data, such as an individual’s personal information.

Benefits of SQL

  • SQL databases used by ISO & ANSI use well-known and long-established guidelines.
  • This language helps the users create multiple database views for various individuals.
  • SQL is a domain language that can exchange information with a database and address questions in a few seconds.
  • SQL can be found in smart devices like laptops, servers, and operating systems.

SQL is used for modifying database tables. It is also used in adding, updating, and deleting rows of data.SQL queries and other operations take the form of commands written as statements and are aggregated into programs that enable users to retrieve data from database tables. As a programming language, SQL has commanded and a syntax for issuing those commands.

SQL commands are divided into several types

  • Data Definition Language (DDL)
  • Data Manipulation Language (DML)
  • Data Query Language
  • Data control language
  • Transaction control language

Limitations of SQL

  • SQL has a complex interface, making it difficult for some users.
  • SQL does not have complete command over the database due to the invisible business rules.
  • The operating cost of some models of this language is so high that a programmer has trouble accessing it.

Difference between SQL & MySQL

SQL is a language used to manage databases, while MySQL is a relational database management system that uses SQL to manage databases. In other words, SQL is a language, while MySQL is a software application that uses SQL. SQL can be used with other database management systems like Oracle, Microsoft SQL Server, and PostgreSQL, while MySQL is a specific system designed for use with the MySQL Server. Additionally, MySQL is an open-source system, meaning it is free to use and modify, while SQL is a language that can be used with proprietary systems as well as open-source systems.

BY Best Interview Question ON 20 Feb 2023