BSON data types overview in MongoDB - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is BSON in MongoDB?

BSON is a binary format used by MongoDB to store data. It is like JSON but includes extra data types and is faster for computers to read and write.

beginner

Name three common BSON data types.

Common BSON data types include String (text), Int32 (small whole numbers), and Date (date and time).

beginner

What BSON type would you use to store true or false values?

You use the Boolean BSON type to store true or false values.

intermediate

How does BSON handle binary data like images or files?

BSON uses the Binary data type to store binary data such as images or files inside the database.

intermediate

Why does BSON include special types like ObjectId and Date?

BSON includes special types like ObjectId to uniquely identify documents and Date to store time information efficiently, which JSON does not support natively.

Which BSON data type is used to store text?

A String

B Int32

C Boolean

D Binary

The String type stores text data in BSON.

What BSON type uniquely identifies a document in MongoDB?

A ObjectId

B Double

C Boolean

D Date

ObjectId is a special BSON type used as a unique ID for documents.

Which BSON type would you use to store a true or false value?

A String

B Boolean

C Int64

D Array

Boolean stores true or false values in BSON.

How does BSON store date and time information?

A As a String

B As an Int32

C Using the Date type

D Using Binary

BSON has a special Date type to store date and time efficiently.

Which BSON type is best for storing images or files?

A Boolean

B String

C ObjectId

D Binary

Binary type stores raw binary data like images or files.

List and describe at least five BSON data types and their uses.

Think about text, numbers, true/false, time, unique IDs, and files.

Explain why BSON is used in MongoDB instead of plain JSON.

Consider what JSON cannot do well that BSON can.