MongoDB is used especially in speedy and traditional relational databases (RDBMS) that are cumbersome and slow. Examples of areas of use include high volume / content problems, data storage for analysis, MMORPG applications, caching systems, web content management systems, and web comment / tag storage and management.
MongoDB does not need a schematic since it has a dynamic structure. You can perform operations on the data efficiently without entering the structure. If this is not the case, using MongoDB for performance will be a more accurate decision than any other relational database. Instead of Mongodb table name, collection gives each document a document name. These documents can create documents in itself, this format is called key value database