Udemy - Data Warehouse - The Ultimate Guide 95%

The Basement wasn't a physical place. It was a state of mind. It was the tangled web of 17 different operational databases—sales in PostgreSQL, user logins in MongoDB, customer support tickets in a messy MySQL dump, and marketing clickstream data living in a CSV file on an intern's laptop.

Arjun smiled. He typed two lines of SQL. The query ran in . udemy - data warehouse - the ultimate guide

Lena’s first lecture hit him like a bucket of cold water. "You do not have a data problem," she said. "You have a schema problem. You are trying to serve a gourmet meal from a garbage disposal." The Basement wasn't a physical place

And that, Arjun decided, was the ultimate victory. user logins in MongoDB