What is MongoDB? Why is it Suitable for Beginners?

MongoDB is a document - based database software that adopts a storage method of "collection (folder) + document (JSON - formatted file)". It has a flexible structure and supports dynamic addition of fields. Unlike the fixed table structure of relational databases, MongoDB documents do not need to have preset columns. It is similar to "keeping a diary" in daily life and is easier to get started with. It is suitable for beginners: the operation syntax is intuitive (for example, inserting a user uses `db.users.insertOne()`, and querying uses `db.users.find()`), and there is no need to memorize complex concepts. There are also visualization tools (such as MongoDB Compass) for graphical operations. There are abundant introductory tutorials, and the learning cost is low. It supports rapid development of small projects (such as a to - do App) without worrying about table structure design. In conclusion, with its characteristics of flexibility, simplicity and intuitiveness, MongoDB has become a friendly tool for beginners to quickly master database logic and develop small projects efficiently.