This Python script migrates data from a MongoDB database to a MySQL database. It iterates over all collections in the MongoDB database, creates corresponding tables in the MySQL database, and inserts the data.

Ensure that you have Python installed on your machine. You also need to have MongoDB and MySQL servers running.

1. Clone the repository to your local machine.

2. Navigate to the project directory.

3. Install the required Python packages:

   pip install pymongo
   pip install pymysql

Update the MongoDB and MySQL database credentials in the config.py file:

# Source Database Configuration
mongo_config = {
    'url': 'mongodb://localhost:27017/',
    'db_name': 'sample_guides',
}

# Destination Database Configuration
mysql_config = {
    'host': 'localhost',
    'user': 'root',
    'password': 'mysql',
}

mysql_db_name = 'Test_DB-MySQL' # This will be converted to snake case(test_db_mysql)

Run the script with the following command:

python migrate.py

The script will connect to the MongoDB database, iterate over all collections, It then connects to the MySQL server, drops the existing database if it exists, and creates a new one. For each MongoDB collection, the script creates a corresponding table and column with snake_case names based on the MongoDB collections' structure, and insert data accordingly. It skips the _id and _class columns during table creation and data insertion based on the configuration settings SKIP_ID_FIELD and SKIP_CLASS_FIELD respectively.

This script assumes that the MongoDB and MySQL servers are running on localhost. If your servers are running on different hosts, update the host information in the database credentials.