Document model mental model (JSON/BSON) in MongoDB - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to create a MongoDB document with a name field.

MongoDB

{ "name": "[1]" }

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

Atrue

BAlice

Cnull

D123

Attempts:

3 left

💡 Hint

Common Mistakes

Using a number or boolean instead of a string for the name field.

The name field should be a string representing a person's name, like "Alice".

2fill in blank

medium

Complete the code to add an age field with a number value.

MongoDB

{ "age": [1] }

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

A"twenty"

Btrue

C30

D"30"

Attempts:

3 left

💡 Hint

Common Mistakes

Putting the number inside quotes, making it a string instead of a number.

The age field should be a number without quotes, like 30.

3fill in blank

hard

Fix the error in the document by choosing the correct boolean value for the active field.

MongoDB

{ "active": [1] }

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

ATrue

B"true"

C1

Dtrue

Attempts:

3 left

💡 Hint

Common Mistakes

Using quotes around true or capitalizing it, which is invalid in JSON.

Boolean values in JSON are true or false without quotes and lowercase.

4fill in blank

hard

Fill both blanks to create a nested document with address and city fields.

MongoDB

{ "address": { "city": "[1]", "zip": [2] } }

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

ANew York

B10001

C"Los Angeles"

D90210

Attempts:

3 left

💡 Hint

Common Mistakes

Putting quotes inside quotes for city or using zip code as a string.

The city field is a string without extra quotes inside the code, so use New York. The zip code is a number, so use 10001 without quotes.

5fill in blank

hard

Fill all three blanks to create a document with a list of tags and a flag.

MongoDB

{ "tags": [[1], [2]], "flag": [3] }

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

A"mongodb"

B"database"

Cfalse

Dtrue

Attempts:

3 left

💡 Hint

Common Mistakes

Using booleans as strings or forgetting quotes around strings in the list.

The tags list contains strings, so use "mongodb" and "database" with quotes. The flag is a boolean and should be true without quotes.