Databricks Databricks-Certified-Professional-Data-Engineer Question Answer
A streaming video analytics team ingests billions of events daily into a Unity Catalog-managed Delta table video_events . Analysts run ad-hoc point-lookup queries on columns like user_id, campaign_id, and region. The team manually runs OPTIMIZE video_events ZORDER BY (user_id, campaign_id, region), but still sees poor performance on recent data and dislikes the operational overhead. The team wants a hands-off way to keep hot columns co-located as query patterns evolve.

