SQL
SQL (Structured Query Language) 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, though implementations often include proprietary extensions.
Developers should learn SQL because it is essential for interacting with relational databases, which are widely used in applications ranging from web development to data analysis. It enables efficient data retrieval, aggregation, and manipulation, making it crucial for backend systems, reporting tools, and data-driven decision-making. Mastery of SQL syntax improves performance and data integrity in database operations.