Database and collection creation in MongoDB - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to create a new database named 'school'.

MongoDB

use [1]

Drag options to blanks, or click blank then click option'

Alibrary

Bstore

Cschool

Doffice

Attempts:

3 left

💡 Hint

Common Mistakes

Using a database name other than 'school'.

Forgetting to use the 'use' command.

The use command switches to or creates the database named 'school'.

2fill in blank

medium

Complete the code to create a collection named 'students' in the current database.

MongoDB

db.[1].insertOne({name: 'Alice', age: 20})

Drag options to blanks, or click blank then click option'

Astudents

Bcourses

Cteachers

Dclasses

Attempts:

3 left

💡 Hint

Common Mistakes

Using a collection name other than 'students'.

Trying to create a collection without inserting a document.

In MongoDB, inserting a document into a collection creates the collection if it does not exist. Here, 'students' is the collection name.

3fill in blank

hard

Fix the error in the code to create a collection named 'books'.

MongoDB

db.createCollection('[1]')

Drag options to blanks, or click blank then click option'

Abooks

BbooksCollection

Cbooks.create

Dbooks.createCollection

Attempts:

3 left

💡 Hint

Common Mistakes

Using create() method on a collection.

Confusing collection name with method name.

The correct method to create a collection explicitly is db.createCollection('books').

4fill in blank

hard

Fill both blanks to explicitly create a collection named 'employees' in the 'company' database.

MongoDB

use [1]
db.[2]('employees')

Drag options to blanks, or click blank then click option'

Acompany

Bemployees

CcreateCollection

Dstaff

Attempts:

3 left

💡 Hint

Common Mistakes

Using wrong database name.

Using wrong method to create collection.

First, switch to the 'company' database using use company. Then create the collection 'employees' explicitly with db.createCollection('employees'). Here, the blank for the method is createCollection.

5fill in blank

hard

Fill all three blanks to create a database 'library', create a collection 'books', and insert a document with title '1984'.

MongoDB

use [1]
db.[2].[3]({title: '1984'})

Drag options to blanks, or click blank then click option'

Alibrary

Bbooks

CinsertOne

DinsertMany

Attempts:

3 left

💡 Hint

Common Mistakes

Using insertMany when only one document is inserted.

Using wrong collection or database names.

First, switch to the 'library' database. Then use the 'books' collection. Finally, insert one document with insertOne method.