## Highlights - I would argue that in the era of Big Data and columnar storage, the star schema is an anti-pattern because it increases the query complexity. At the time of this writing, thanks to the economies of scale provided by the large Cloud providers, storage is cheap. It’s more cost effective in the long run to make it simpler and faster for the data analysts to query the data than it is to optimize for storage costs. Said another way, the gold layer in the medallion architecture, otherwise known as the data mart, should be a single wide table.