Insert with nested documents in MongoDB - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to insert a document with a nested address field.

MongoDB

db.users.insertOne({ name: "Alice", address: [1] })

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Acity: "New York", zip: "10001"

B"city: New York, zip: 10001"

C{ city: "New York", zip: "10001" }

D[ city: "New York", zip: "10001" ]

Attempts:

3 left

💡 Hint

Common Mistakes

Using square brackets instead of curly braces for nested documents.

Writing nested fields as a string instead of an object.

The nested document must be an object with key-value pairs inside curly braces.

2fill in blank

medium

Complete the code to insert a user with nested contact details.

MongoDB

db.users.insertOne({ name: "Bob", contact: [1] })

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A{ phone: "123-4567", email: "[e-mail]" }

B[ phone: "123-4567", email: "[e-mail]" ]

C"phone: [phone], email: [e-mail]"

Dphone: "123-4567", email: "[e-mail]"

Attempts:

3 left

💡 Hint

Common Mistakes

Using square brackets instead of curly braces.

Writing nested fields as a string.

Nested documents must be objects with key-value pairs inside curly braces.

3fill in blank

hard

Fix the error in the insertOne command to correctly insert nested documents.

MongoDB

db.orders.insertOne({ orderId: 101, details: [1] })

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A{ product: "Book", quantity: 2 }

B"product: Book, quantity: 2"

C[ product: "Book", quantity: 2 ]

Dproduct: "Book", quantity: 2

Attempts:

3 left

💡 Hint

Common Mistakes

Using square brackets for nested documents.

Writing nested fields as a string.

Nested documents must be objects inside curly braces, not arrays or strings.

4fill in blank

hard

Fill both blanks to insert a product with nested specifications and dimensions.

MongoDB

db.products.insertOne({ name: "Laptop", specs: [1], dimensions: [2] })

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A{ cpu: "Intel i7", ram: "16GB" }

B[ cpu: "Intel i7", ram: "16GB" ]

C{ width: 13, height: 9, depth: 0.6 }

D[ width: 13, height: 9, depth: 0.6 ]

Attempts:

3 left

💡 Hint

Common Mistakes

Using arrays instead of objects for nested documents.

Mixing curly braces and square brackets incorrectly.

Both specs and dimensions are nested documents and must be objects inside curly braces.

5fill in blank

hard

Fill all three blanks to insert a blog post with nested author, tags, and metadata fields.

MongoDB

db.posts.insertOne({ title: "MongoDB Tips", author: [1], tags: [2], metadata: [3] })

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A{ name: "Jane", email: "[e-mail]" }

B[ "database", "nosql", "mongodb" ]

C{ views: 150, likes: 10 }

D"database, nosql, mongodb"

Attempts:

3 left

💡 Hint

Common Mistakes

Using strings instead of arrays for tags.

Using arrays instead of objects for author or metadata.

Author and metadata are nested documents (objects), tags is an array of strings.