Converting a database from MySQL to MongoDB involves several steps. Here’s a clear step-by-step guide with code examples in Python:
Step 1: Install Necessary Libraries
Make sure you have the required libraries installed. For this guide, you’ll need pymysql to interact with MySQL and pymongo to interact with MongoDB.
Bash
pip install pymysql pymongoStep 2: Connect to MySQL
Python
import pymysql
# Connect to MySQL
mysql_conn = pymysql.connect(
host='localhost',
user='your_username',
password='your_password',
database='your_database'
)
mysql_cursor = mysql_conn.cursor() Step 3: Retrieve Data from MySQL
Python
# Execute MySQL query to fetch data
mysql_cursor.execute("SELECT * FROM your_table")
data = mysql_cursor.fetchall()Step 4: Connect to MongoDB
Python
from pymongo import MongoClient
# Connect to MongoDB
mongo_client = MongoClient('localhost', 27017)
mongo_db = mongo_client['your_mongodb_database']
mongo_collection = mongo_db['your_mongodb_collection']Step 5: Insert Data into MongoDB
Python
# Insert data into MongoDB
for record in data:
mongo_collection.insert_one({
'field1': record[0], # Map MySQL fields to MongoDB fields
'field2': record[1],
# Add more fields as needed
})Step 6: Verify Data in MongoDB
Python
# Print documents in MongoDB collection
for document in mongo_collection.find():
print(document)Step 7: Close Connections
Python
# Close connections
mysql_cursor.close()
mysql_conn.close()
mongo_client.close()This guide outlines the basic steps to convert a MySQL database to MongoDB using Python. Adjustments may be needed based on your specific database structure and requirements.