Summary
This blog post explores the evolution and impact of external tables in data warehousing, discussing their benefits, historical context, and current applications in modern data architectures. It outlines when to use internal versus external storage, emphasizing the cost-effectiveness and data access efficiency of external tables over transferring data into internal databases. The author shares personal experiences from their long career in the field, illustrating the continuous relevance of external tables in modern data practices, especially for handling cold data.