Insert Multiple Documents in MongoDB

Insert Multiple Documents in MongoDB

MongoDB is a popular NoSQL database that allows you to store data in a flexible, schema-less manner. When working with MongoDB, you might need to insert multiple documents into a collection simultaneously. Here's a guide on how to do it using a programming language like Python.

Prerequisites:

Before you proceed, make sure you have the following set up:

1. MongoDB installed on your system or access to a remote MongoDB server.
2. A MongoDB driver for your programming language. In this example, we'll use the PyMongo driver for Python.

Python Example:

1. First, install the PyMongo driver if you haven't already:

bash
pip install pymongo

2. Now, let's write the Python code to insert multiple documents into a MongoDB collection:

python
import pymongo

# MongoDB connection string
mongo_uri = "mongodb://localhost:27017/"

# Sample data - list of dictionaries representing documents
data_to_insert = [
    {"name": "Alice", "age": 30, "email": "alice@example.com"},
    {"name": "Bob", "age": 25, "email": "bob@example.com"},
    {"name": "Charlie", "age": 35, "email": "charlie@example.com"}
]

try:
    # Connect to MongoDB
    client = pymongo.MongoClient(mongo_uri)

    # Choose the database and collection
    database = client["mydatabase"]
    collection = database["mycollection"]

    # Insert multiple documents into the collection
    result = collection.insert_many(data_to_insert)

    # Print the inserted document IDs
    print("Inserted document IDs:", result.inserted_ids)

except pymongo.errors.ConnectionFailure as e:
    print("Connection failure:", e)
except Exception as e:
    print("Error:", e)

Explanation:

1. We import the pymongo module to work with MongoDB from Python.

2. Set up the MongoDB connection string (mongo_uri) that points to the MongoDB server. In this example, we're connecting to a MongoDB instance running on localhost and listening on the default port 27017. Modify this URI according to your setup.

3. Create a list of dictionaries (data_to_insert) where each dictionary represents a document that you want to insert into the collection.

4. Inside the try block, we connect to the MongoDB server using the pymongo.MongoClient class.

5. We specify the database and collection we want to work with (in this case, "mydatabase" and "mycollection"). If they don't exist, MongoDB will create them when we perform the insert operation.

6. Use the insert_many() method to insert all the documents from the data_to_insert list into the collection. The method returns an object containing the inserted document IDs.

7. We print the inserted document IDs to the console.

8. In case of any exceptions or errors, we handle them in the except block.

Remember to modify the MongoDB connection string, database, collection, and data according to your specific use case. With this code, you can efficiently insert multiple documents into MongoDB using Python.