Joe Hellerstein

As part of growing our massive new Data Science program at Berkeley, it became clear that we needed to target a class specifically for Data ...

When we use SQL for Transformation—the “T” in ELT—the focus changes. In this case, we’re taking many messy and disparate tables an...

ELT is increasingly attractive these days. Modern data warehouses are flexible and increasingly cost-effective, allowing us to store large v...

For the first decades of the Millenium, it seemed like the Java-centric approach was the "hot new thing," but SQL has been roaring back. Tod...