MongoDB Basics Tutorial

MongoDB is a popular NoSQL document-oriented database used for handling large volumes of data. In this tutorial, we will cover the basics of MongoDB and how to interact with it using the MongoDB shell.

1. Installation and Setup:

To get started with MongoDB, you need to install it on your system. You can download the appropriate version of MongoDB for your operating system from the official website (https://www.mongodb.com/try/download/community). After downloading and installing MongoDB, you should start the MongoDB server by running the following command:

mongod

2. Connecting to MongoDB:

To connect to MongoDB, open a new terminal window and run the following command:

mongo

This will open the MongoDB shell.

3. Creating a Database:

To create a new database, use the use command followed by the name of the database you want to create:

use mydatabase

If the database doesn't exist, it will be created automatically.

4. Creating a Collection:

A collection is a group of related documents stored in MongoDB. To create a new collection, you can use the db.createCollection() method:

db.createCollection("mycollection")

5. Inserting Documents:

To insert a new document into a collection, use the db.collection.insert() method:

db.mycollection.insert({name: "John", age: 30})

6. Querying Documents:

To retrieve documents from a collection, use the db.collection.find() method:

db.mycollection.find()

This will return all documents in the collection. You can also specify a query criteria:

db.mycollection.find({name: "John"})

This will return all documents where the name is "John".

7. Updating Documents:

To update a document in a collection, use the db.collection.update() method:

db.mycollection.update({name: "John"}, {$set: {age: 35}})

This will update the age of the document where the name is "John".

8. Removing Documents:

To remove a document from a collection, use the db.collection.remove() method:

db.mycollection.remove({name: "John"})

This will remove all documents where the name is "John".

9. Dropping a Collection:

To drop a collection, use the db.collection.drop() method:

db.mycollection.drop()

This will drop the "mycollection" collection.

10. Dropping a Database:

To drop a database, use the db.dropDatabase() method:

db.dropDatabase()

This will drop the "mydatabase" database.

These are the basic operations you can perform with MongoDB. For more advanced usage, you can explore the official MongoDB documentation.

MongoDB Detailed Tutorial