MongoDB is a document-oriented NoSQL database. Unlike relational databases that store data in tables and rows, MongoDB stores data as JSON-like documents called BSON (Binary JSON). This makes it flexible and scalable for modern applications.
MongoDB is schema-less, meaning each document in a collection can have different fields.
// MongoDB document example
{
"_id": ObjectId("5f43a0b6b31b28a9c2a4b5c1"),
"name": "Alice Johnson",
"email": "alice@example.com",
"age": 29,
"skills": ["JavaScript", "Python", "MongoDB"],
"address": {
"street": "123 Main St",
"city": "New York",
"country": "USA"
},
"createdAt": ISODate("2024-01-15T10:30:00Z")
}
// MongoDB Shell Commands
// Start MongoDB shell: mongosh
// Show databases
show dbs
// Use/create database
use myapp
// Show collections
show collections