polyfills.ac42e0aff240762c.js (17)

Data in MongoDB has a flexible schema. Unlike SQL databases, where you must determine and declare a table’s schema before inserting data. True or false?

 true

 false

MongoDB is specified as SQL database. True or false?

 true

 false

Which of the command is used to display results in an easy-to-read format?

 pretty()

 formatter()

 json()

 format()

The following query specifies a sort in:

db.orders.find().sort( { amount: 1 } )

 ascending order

 descending order

The following query specifies a sort in:

db.orders.find().sort( { amount: -1 } )

 ascending order

 descending order

Fill the blank to specify the order in which the query returns matching documents.

db.find().({ amount: -1 })

Fill the blank to to specify the maximum number of documents that should be returned.

db.find().(10)

Which of the command is used to query data from MongoDB collection?

 db.products.select() 

 db.products.search()  

 db.products.find()

 db.products.selectAll()

Which of the command can be used to insert a new document?

 db.students.insert()

 db.students.add()

 db.students.create()

 db.students.save()

db.save():

 Insert a new document into the collection

 Update a single existing document in the collection

 Insert either a new document or update an existing document in the collection

 Insert multiple new documents into the collection