In addition to the code snippets I provided earlier, here is a complete example that incorporates all of the best practices I mentioned:

Connecting to Azure SQL Database with Python and SQL Alchemy using Active Directory Integrated Authentication

Updating pandas to version 0.19 in Azure ML Studio: A Step-by-Step Guide

How to Encrypt Passwords in C# with Azure SQL Database

Resolving Type Errors When Loading Flat Files from Azure Data Lake into a DataFrame

Revoke Users Access on Schema in Azure SQL: A Step-by-Step Guide to Removing Permissions