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ObjectID is a 12-byte BSON type. These are: 4 bytes value representing seconds 3 byte machine identifier 2 byte process id 3 byte counter In MongoDB, the ObjectID is a 12-byte identifier typically employed as the primary key for documents within a collection. It is a BSON data type and consists of the following components: … Read more

No. There is no need a lot of RAM to run MongoDB. It can be run even on a small amount of RAM because it dynamically allocates and de-allocates RAM according to the requirement of the processes. The amount of RAM needed for MongoDB depends on various factors such as the size of your dataset, … Read more

We can achieve primary key-foreign key relationship by embedding one document inside another. For example: An address document can be embedded inside customer document. MongoDB, as a NoSQL database, does not natively support primary key-foreign key relationships in the same way as traditional relational databases like MySQL or PostgreSQL. MongoDB uses a flexible schema design … Read more

No. By Default, MongoDB doesn’t support primary key-foreign key relationship. MongoDB, as a NoSQL database, does not support traditional primary-key and foreign-key relationships like those found in relational databases. In MongoDB, data is stored in flexible, JSON-like documents in BSON (Binary JSON) format. Each document can have its own structure, and there is no need … Read more

MongoDb is the best NoSQL database because, it is: Document Oriented Rich Query language High Performance Highly Available Easily Scalable MongoDB is often considered a popular and versatile NoSQL database for several reasons: Schema Flexibility: MongoDB is a schema-less database, allowing you to store and retrieve data without a predefined structure. This flexibility is particularly … Read more