Skip to main content

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.

mongodb-basics-tutorial


  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

  1. Connecting to MongoDB:

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

mongo
This will open the MongoDB shell.

  1. 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.

  1. 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")

  1. Inserting Documents:

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

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

  1. 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".

  1. 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".

  1. 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".

  1. Dropping a Collection:

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

db.mycollection.drop()
This will drop the "mycollection" collection.

  1. 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.




Comments

Popular posts from this blog

Are Cold Drinks Like Pepsi and Coca-Cola Bad for Your Health? A Look at the Risks and Effects

Are Cold Drinks Like Pepsi and Coca-Cola Unhealthy? Cold drinks like Pepsi and Coca-Cola are some of the most popular beverages in the world. They are often consumed in large quantities, especially during hot weather, and are a common part of many people's diets. However, there has been a lot of debate in recent years about whether or not these drinks are actually healthy. One of the main reasons why cold drinks like Pepsi and Coca-Cola are considered to be unhealthy is their high sugar content. These drinks are loaded with sugar, with a single can of Coca-Cola containing around 39 grams of sugar, which is more than the recommended daily intake for an adult. The high sugar content in these drinks can contribute to weight gain, obesity, and a range of other health problems. Regular consumption of these drinks has been linked to an increased risk of type 2 diabetes. This is because drinking sugary beverages can lead to insulin resistance, which is a condition where the body's ce

Top 100 Angular Interview Questions and Answers

  What is Angular? Angular is a TypeScript-based open-source web application framework used for building dynamic web applications. What are the advantages of using Angular? The advantages of using Angular are: Increased productivity Reusability of code Enhanced testing capabilities Improved performance Enhanced security features Better user experience What are the key features of Angular? The key features of Angular are: Two-way data binding Dependency injection Templates Directives Services Routing Forms Animations What is TypeScript? TypeScript is a superset of JavaScript that adds optional static typing, classes, and interfaces to the language. What is the difference between AngularJS and Angular? AngularJS is the older version of the Angular framework, while Angular is the newer version. Angular is a complete rewrite of AngularJS and has many new features and improvements over AngularJS. What is a component in Angular? A component in Angular is a building block of an applicati

Getting Started with Bubble.io: Advantages, Disadvantages, and Key Features

Bubble.io is a no-code development platform that allows users to create web applications without writing any code. It provides an easy-to-use interface that simplifies the development process and makes it accessible to people without any technical knowledge. In this article, we will explore what Bubble.io is, why it is useful, when to use it, and its advantages and disadvantages. What is Bubble.io? Bubble.io is a cloud-based platform that enables users to create web applications visually, without having to write any code. Users can create applications by dragging and dropping elements on a canvas, connecting them with workflows and data sources, and customizing them to fit their needs. Bubble.io provides a range of pre-built plugins and integrations, which allow users to add advanced functionality to their applications with ease. Why use Bubble.io? Bubble.io provides several benefits that make it an attractive option for people looking to create web applications. Here are a few reasons