A. $setcon
B. $concatenation
C. $concat
D. None of the mentioned
MongoDB supports the execution of JavaScript code for certain server-side operations like:
Which of the following is used to display the replica set configuration object ?
Which of the field is reserved for use as a primary key ?
________ subtracts two dates to return the difference in milliseconds
Object_Id is similar to _________ key in Relational Databases
In the mongo shell, you can access the creation time of the ObjectId, using the ______ method..
_____________ is used to initiate relica member set.
To generate pseudo-random data to use for a keyfile, issue the following __________ command.
GridFS uses a _________ index on the chunks collection for the files_id and n fields.
Which of the following query is used to generate a new ObjectId, use the ObjectId() constructor with no argument