MongoDB — Data Types

BSON Data Types

Type	Description	Example
String	Text	"Hello"
Integer	Whole number	42
Double	Floating point	3.14
Boolean	True/false	true
Array	List	[1, 2, 3]
Object	Embedded document	{ key: "value" }
ObjectId	Unique identifier	ObjectId("...")
Date	Date/time	new Date()
Null	Null value	null

String

{ name: "John Doe" }

Number

{ age: 30, price: 19.99 }

Boolean

{ active: true }

Array

{ hobbies: ["reading", "gaming"] }

Object

{ 
  address: { 
    street: "123 Main St",
    city: "New York" 
  }
}

Date

{ createdAt: new Date() }

ObjectId

{ _id: ObjectId("507f1f77bcf86cd799439011") }

Mini Practice

Use different data types
Create nested objects
Use arrays
Work with dates

Up Next

Continue with Insert — inserting documents.

Frequently Asked Questions about Data Types

What is Data Types in MongoDB?

Data Types is a fundamental concept in MongoDB. This lesson explains it step by step with clear examples, making it easy for beginners to understand.

How do I learn Data Types?

Start by reading the explanation above, then try the code examples. Practice by modifying the examples and experimenting with different values. Hands-on practice is the best way to learn Data Types.

Why is Data Types important in MongoDB?

Data Types is essential for MongoDB development. Understanding this concept will help you write better code and solve real-world problems more effectively.