MongoDB
MongoDB is a popular, open-source NoSQL database management system. Unlike traditional relational databases, MongoDB stores data in a flexible, JSON-like document format, which makes it easier to handle complex, unstructured data. MongoDB is horizontally scalable, meaning that it can easily handle large amounts of data and handle high traffic loads, making it a popular choice for modern web and mobile applications. Additionally, MongoDB provides powerful indexing and aggregation capabilities, making it easy to analyze large datasets and perform complex queries. With its ease of use and scalability, MongoDB has become one of the most widely adopted NoSQL databases, and is used by companies of all sizes to handle their big data needs.