Top Interview Questions on Magento

Yes. Yes, it is true that MongoDB uses BSON (Binary JSON) to represent document structure. BSON is a binary-encoded serialization of JSON-like documents and is the primary data representation for documents in MongoDB. It adds some additional data types and encoding to JSON to better support the data types used in MongoDB, such as ObjectId, … Read more

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