Database Fundamentals

SQL is a programming language vital for operating databases, which are software designed for the organization, management, and storage of data. Databases play a central role in data storage, analysis, record keeping, and web application management. They function on principles of integrity, availability, security, independence, and concurrency. Databases can be relational, NOSQL, column, graph, or key-value based. A Database Management System maintains these databases by managing data, ensuring its integrity, facilitating concurrent access, regulating transactions, securing data, and managing various utility functions.