The structure of the NoSQL database management systemMongoDB is very different to relational database solutions like MySQL. In particular, NoSQL systems are set up in a way that allows for more scalability and flexibility. In such a system, data is stored in documents, which are then organized into collections. While MongoDB automatically creates collections, you also have the option as the user to set them up manually in MongoDB with Create Collection. By setting collections up yourself, you can define certain parameters, like the maximum size of a document. If, however, you want to get rid of a collection, you can use drop collection to remove it from the database.