Slowly Changing Dimensions – An introduction

Being new to data warehousing, I never heard about the term "Slowly Changing Dimensions" before. It sounded like academic jargon. It isn't. It's one of those concepts that, once it clicks, explains half the weird design decisions you'll see in any reporting database. This post is the explainer I wish existed before I had to learn it the hard way: by breaking a report Facts and dimensions, the…