MONGODB Tutorial

📦 Introduction to MongoDB

MongoDB is a popular NoSQL database that stores data in flexible, JSON-like documents. Unlike traditional relational databases, MongoDB doesn’t use tables and rows but instead uses collections and documents.

🛠️ Core Concepts

• Database: A container for collections.
• Collection: A group of MongoDB documents, similar to a table in RDBMS.
• Document: A set of key-value pairs, similar to a JSON object.
• _id: A unique identifier automatically assigned to each document.

🧾 Example Document

{
  "_id": "507f1f77bcf86cd799439011",
  "name": "Alice",
  "email": "alice@example.com",
  "age": 28,
  "interests": ["coding", "music", "travel"]
}
  

🚀 Why Use MongoDB?

• Flexible data model
• High performance and scalability
• Great for handling large volumes of unstructured data
• Built-in replication and sharding support

🔧 Basic MongoDB Commands

// Show databases
show dbs

// Create or switch to a database
use myDatabase

// Show collections in the current database
show collections

// Insert a document into a collection
db.users.insertOne({ name: "Alice", age: 28 })

// Find all documents in a collection
db.users.find()
  

📱 Responsive Layout Tip

MongoDB is widely used in mobile and web apps where schema flexibility is crucial. You can integrate it easily with frameworks like Node.js for full-stack JavaScript applications.

✅ Conclusion

MongoDB is a powerful NoSQL database that's perfect for applications requiring high flexibility, scalability, and performance. Its document-based structure allows you to work with complex data easily, making it a favorite among developers building modern web apps.