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___________is the _id is of the data type chosen for the original document in files collections.(a) files._id(b) file._id(c) fileobj._id(d) none of the mentionedThis question was addressed to me in exam.My question is from Data Modeling Concepts topic in portion Data Models of MongoDB

Answer» RIGHT answer is (a) files._id

Easy explanation: The DEFAULT type for MONGODB documents is BSON ObjectId.


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