Explanation:db.collection.explain() provides information on the execution of other operations, such as db.collection.update(). 4. The ________ message is used to update a document in a collection.
A. UPDATE
B. OP_UPDATE
C. OP_UPDATES
D. All of the mentioned
Answer:A
Explanation:db.collection.explain() provides information on the execution of other operations, such as db.collection.update(). 4. The ________ message is used to update a document in a collection.
A. UPDATE B. OP_UPDATE C. OP_UPDATES D. All of the mentioned
Explanation:Only the OP_QUERY and OP_GET_MORE messages result in a response from the database. 5. Point out the correct statement :