SQL Fundamentals

About

SQL (Structured Query Language) is the standard language used to communicate with relational databases. It allows us to create, read, update, and delete data (commonly known as CRUD operations), as well as define database structures, manage access, and control transactions.

The SQL Fundamentals section covers the core building blocks of the SQL language. This includes commands, clauses, operators, and datatypes that form the basis for interacting with any relational database system—be it Oracle, MySQL, PostgreSQL, SQL Server, or others.