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Consider a collection posts which has fields: Jd, post_text, post_author, post_timestamp, post_tags etc. Which of the following query retrieves ONLY the key named post_text from the first document retrieved?
Answer : A
A collection and a document in MongoDB is equivalent to which of the SQL concepts respectively?
Answer : B
Which option can be used with update command so that a new document gets created if no matching document is found based on the query condition?
Answer : D
Write the command(s) are correct to enable sharding on a database "testdb" and shard a collection "testCollection" with _id as shard key.
See Below Explanation:
Answer : A
Which of the following are common uses of the mongo shell? Check all that apply
Answer : A, B
