When querying a Delta table, which statement about metadata queries indicates maintenance events were recorded?

• A. DESCRIBE HISTORY shows maintenance events
• B. REFRESH TABLE updates maintenance events
• C. DESCRIBE HISTORY reveals historical maintenance events
• D. EXPLAIN TABLE shows maintenance events

Answer: (A)

The main idea is that the history of a Delta table, accessed with DESCRIBE HISTORY, logs all actions that changed the table’s metadata and files. This history includes maintenance-related actions, which appear as entries with an operation indicating maintenance. So when you see those maintenance entries in the output, you know maintenance events were recorded.

The other options don’t indicate this. REFRESH TABLE only updates local metadata in your session and doesn’t create or log maintenance actions. EXPLAIN TABLE shows the query plan for a read, not the table’s metadata history. DESCRIBE HISTORY reveals historical maintenance events, but the most direct indicator is that DESCRIBE HISTORY shows the maintenance entries in the history output.