Non-relational databases, often referred to as NoSQL databases, are designed to store and manage data in a flexible, non-tabular format. Unlike traditional relational databases that organize data into structured tables with predefined schemas, non-relational databases allow for unstructured, semi-structured, or structured data to be stored in various formats, such as key-value pairs, documents, or graphs. This flexibility makes them ideal for handling large volumes of diverse data, particularly in applications where data requirements may evolve over time. Non-relational databases are widely used in scenarios involving big data, real-time web applications, and content management systems.