MongoDB Getting Started
Introduction to MongoDB
MongoDB is a NoSQL database that stores data in flexible, JSON-like documents. It is widely used for its scalability, flexibility, and ease of use.
Installing MongoDB
To get started with MongoDB, you first need to install it on your system. Follow these steps:
- Download MongoDB from the official website.
- Install MongoDB according to your operating system.
- Set up the MongoDB environment variables, if required.
Starting MongoDB Server
Once installed, you can start the MongoDB server:
Example: Starting MongoDB
mongodThis command starts the MongoDB server.
Connecting to MongoDB
Next, connect to MongoDB using the MongoDB shell or a MongoDB client:
Example: Connecting to MongoDB
mongoThis command connects to the local MongoDB server using the MongoDB shell.
Creating a Database
To create a database in MongoDB, use the use command:
Example: Creating a Database
use mydatabaseThis command creates a new database named “mydatabase”.
Creating Collections
Inside a MongoDB database, data is stored in collections. You can create a collection using the db.createCollection() method:
Example: Creating a Collection
db.createCollection("users")This command creates a new collection named “users”.
Basic CRUD Operations
Perform basic CRUD operations (Create, Read, Update, Delete) using MongoDB:
- Create:
db.collection.insertOne(),db.collection.insertMany() - Read:
db.collection.find(),db.collection.findOne() - Update:
db.collection.updateOne(),db.collection.updateMany() - Delete:
db.collection.deleteOne(),db.collection.deleteMany()
Conclusion
Congratulations! You’ve learned the basics of MongoDB, including installation, starting the server, connecting to MongoDB, creating databases and collections, and performing basic CRUD operations. This knowledge will help you get started with building applications using MongoDB.