Slowly Changing Dimensions (SCD): What They Are and How to Actually Choose the Right One

When you're working with data, one thing is guaranteed: data changes . Customers move, prices get updated, employees switch roles. The real question isn’t if data changes, it’s how you handle those changes without breaking your analytics later . That’s where Slowly Changing Dimensions (SCD) come in. First, What Are SCDs? SCDs are just different ways of handling updates to dimension data. Whenever…