MongoDB Shell Basics

1. Introduction

The MongoDB shell is an interactive JavaScript interface to MongoDB, providing a powerful environment for database management and querying. It allows users to create, read, update, and delete data in a MongoDB database.

2. Getting Started

To start using the MongoDB shell, follow these steps:

1. Install MongoDB on your system.
2. Open your command-line interface (CLI).
3. Run the command mongo to start the MongoDB shell.

3. Basic Commands

Here are some essential commands to get you started:

• show dbs - Lists all databases.
• use - Switches to the specified database.
• db.createCollection() - Creates a new collection.
• db..insert() - Inserts a document into a collection.

4. Querying Data

To retrieve data from your collections, you can use the following commands:

db..find()

This command will return all documents in the specified collection. You can also use query filters:

db..find({ :  })

5. Best Practices

When working with the MongoDB shell, consider the following best practices:

• Always backup your data before performing bulk operations.
• Use indexes to improve query performance.
• Keep your MongoDB server updated to the latest version.
• Use environment variables to manage sensitive information like passwords.

6. FAQ