Data Modeling for Analytics
The same data can be organized in ways that make analytical queries fast, intuitive, and cheap — or slow, confusing, and expensive. Data modeling is the craft of that organization, and it's where a counterintuitive truth lives: the careful normalization that's correct for application databases is often exactly wrong for analytics. Analytical data wants to be shaped differently, around how questions are asked rather than how data is written, and understanding dimensional modeling is understanding how to make a warehouse actually usable.
The same data, organized differently, makes analytical queries fast and intuitive — or slow and confusing. Data modeling is the craft of that organization, and it holds a counterintuitive truth: the normalization that's correct for application databases is often exactly wrong for analytics.