Structured Query Language

Structured Query Language (SQL) is a domain-specific programming language designed for managing and manipulating relational databases. It allows users to query, insert, update, and delete data, as well as define and modify database schemas. SQL is standardized by ANSI and ISO, making it widely supported across various database management systems.

Also known as: SQL, Sequel, Structured Cooking, Structured Query, Standard Query Language

Why learn Structured Query Language?

Developers should learn SQL when working with relational databases, which are common in applications requiring structured data storage, such as e-commerce platforms, content management systems, and financial software. It is essential for tasks like data analysis, reporting, and backend development, enabling efficient data retrieval and management through declarative queries.

Learning Resources

• tutorial: W3Schools SQL Tutorial
• tutorial: SQLZoo Interactive Exercises
• docs: PostgreSQL Documentation
• course: Khan Academy Intro to SQL
• tutorial: SQLBolt Interactive Lessons