SQL (Structured Query Language) database refers to any database that uses SQL as its language for accessing and managing data. SQL is a standard programming language used to communicate with relational databases, allowing users to create, read, update and delete data in the database.
There are many different types of SQL databases, including MySQL, Oracle, Microsoft SQL Server, PostgreSQL, and SQLite, among others. Each of these databases has its own unique features and capabilities, but they all share a common set of SQL commands that are used to interact with the database.
SQL databases are widely used in various applications, such as web development, business intelligence, data analytics, and many others. They offer several benefits over other types of databases, including ease of use, scalability, security, and reliability.