Structured Query Language

What does Structured Query Language mean?

Structured Query Language (SQL) is a standard language for interacting with relational databases, allowing users to retrieve, update, insert, and delete data in a structured and efficient manner. It provides a consistent and Platform-independent way to access and manipulate data from different Relational Database management systems (RDBMS). SQL is a declarative language, meaning it specifies the desired results without dictating the exact steps to achieve them. This makes it easier for users to express complex queries without having to worry about the underlying implementation details.

Applications

SQL is a key technology in today’s digital world, powering various applications across industries. It is used for:

• Data retrieval and management: SQL allows users to select, filter, and retrieve data from tables based on specific criteria. It also enables them to update, insert, and delete data, maintaining the integrity and Consistency of the database.
• Data analysis and reporting: SQL can be used to analyze data, aggregate results, and generate reports. It can extract meaningful insights and help businesses make informed decisions.
• Data Integration and exchange: SQL facilitates data exchange between different systems and applications. It allows users to import and export data in a structured format, enabling seamless integration.
• Web and mobile applications: Many web and mobile applications rely on SQL to access and manipulate data stored in relational databases. It provides a secure and efficient way to handle user interactions and transactions.

History

The development of SQL can be traced back to the 1970s, when IBM’s System R project aimed to create a comprehensive database management system. In 1974, Donald Chamberlin and Raymond Boyce introduced the concept of a relational database and developed a query language called SEQUEL (Structured English Query Language). SEQUEL was later renamed SQL to simplify its pronunciation.

In 1986, the American National Standards Institute (ANSI) published the first SQL standard, which aimed to standardize the language across different database vendors. Over the years, SQL has undergone several revisions and updates to enhance its capabilities and support new features. Today, it is widely recognized as the de facto standard for relational database querying.