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Does mongodb support primary-key, foreign-key relationship?

Question Posted / vibhu sharma


Does mongodb support primary-key, foreign-key relationship?..

Answer / Varun Vikram Singh

Yes, MongoDB supports a concept similar to primary keys but not in the traditional sense of relational databases. Each document in MongoDB has an _id field by default, which can serve as a unique identifier. Foreign keys are not directly supported in MongoDB, but relationships between documents can be established using references or embedded documents.

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