Crud Operations in MongoDb with NPM

Here are some basic CRUD (Create, Read, Update, Delete) examples using MongoDB, assuming you’re interacting with it using the MongoDB Node.js driver:

Prerequisites:

• Make sure you have MongoDB installed and running locally or accessible via a remote connection.
• Install the MongoDB Node.js driver using npm:
• npm install mongodb

CRUD Examples:

1. Connecting to MongoDB:

const { MongoClient } = require('mongodb');

// Connection URI
const uri = 'mongodb://localhost:27017';

// Database Name
const dbName = 'mydatabase';

// Create a new MongoClient
const client = new MongoClient(uri);

// Function to perform operations
async function main() {
  try {
    // Connect the client to the server
    await client.connect();

    console.log('Connected to MongoDB');

    const database = client.db(dbName);

    // Perform CRUD operations here...

  } finally {
    // Close the connection
    await client.close();
  }
}

main().catch(console.error);

2. Inserting a Document:

const collection = database.collection('mycollection');

const document = { name: 'John Doe', age: 30 };

const result = await collection.insertOne(document);

console.log('${result.insertedCount} documents inserted with the _id: ${result.insertedId}');

3. Finding Documents:

const documents = await collection.find({}).toArray();

console.log('Found documents:', documents);

4. Updating a Document:

const filter = { name: 'John Doe' };
const updateDocument = {
  $set: { age: 31 }
};

const result = await collection.updateOne(filter, updateDocument);

console.log('${result.modifiedCount} document(s) updated');

5. Deleting a Document:

const deleteFilter = { name: 'John Doe' };

const result = await collection.deleteOne(deleteFilter);

console.log('${result.deletedCount} document(s) deleted');

These are basic examples to get you started with MongoDB CRUD operations using the Node.js driver. Remember to handle errors appropriately in your production code.