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MongoDB Interview Questions and Answers

Ques 1. What is MongoDB?

MongoDB is a NoSQL database that provides high performance, high availability, and easy scalability. It stores data in flexible, JSON-like documents called BSON.

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Ques 2. Explain the structure of a MongoDB document.

A MongoDB document is a JSON-like data structure composed of field-value pairs. Fields may contain other documents, arrays, and arrays of documents.

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Ques 3. What is BSON?

BSON is a binary representation of JSON-like documents that MongoDB uses to store data. It adds support for data types like Date and Binary that are not natively supported in JSON.

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Ques 4. What is a NoSQL database?

NoSQL databases are databases that provide a mechanism for storage and retrieval of data that is modeled in ways other than the tabular relations used in relational databases.

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Ques 5. What is a MongoDB collection?

A collection in MongoDB is a group of MongoDB documents. It is equivalent to an RDBMS table.

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