MongoDB Quiz

Which command is used to show all databases in MongoDB?

• db.show()

• show dbs

• show databases

• dbs.show()

What command switches to a database named studentDB?

• switch studentDB

• use studentDB

• db studentDB

• select studentDB

Which command displays all collections in the current database?

• show collections

• show tables

• db.showCollections()

• show all

How do you insert one document into a collection named students?

• students.insert({name:"Ali"})

• db.students.insertOne({name:"Ali"})

• insert students({name:"Ali"})

• db.students.add({name:"Ali"})

Which is a valid data type in MongoDB?

• String

• Integer

• Boolean

• All of the above

MongoDB stores data in which format?

• XML

• BSON

• CSV

• YAML

Which is the correct command to delete a collection?

• drop collection students

• db.students.remove()

• db.students.delete()

• db.students.drop()

To update a field in a document, we use which operator?

• $update

• $modify

• $set

• $change

To delete a specific student using email, which command is used?

• db.students.remove({email: "[e-mail]"})

• db.students.delete({email: "[e-mail]"})

• remove db.students(email="[e-mail]")

• db.students.drop(email: "[e-mail]")

MongoDB is a:

• Relational DBMS

• NoSQL Document DB

• Graph Database

• SQL-based system