Data Engineering Associate with Databricks Practice Exam

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Study for the Data Engineering Associate exam with Databricks. Use flashcards and multiple choice questions with hints and explanations. Prepare effectively and confidently for your certification exam!

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What SQL command is used to view the history of a Delta table?

SELECT * FROM history
DESCRIBE HISTORY
SHOW TABLE HISTORY
VIEW DATABASE HISTORY

The correct answer is: DESCRIBE HISTORY

The command used to view the history of a Delta table is "DESCRIBE HISTORY." This SQL command provides detailed information about all changes made to the Delta table, including transaction details like the timestamp, user, operation type, and any relevant metadata. This allows users to track the evolution of data within the table, making it easier to audit changes, troubleshoot issues, or revert to previous states if necessary. In contrast, the other options do not serve the purpose of retrieving Delta table change history. For example, selecting all records from a table or using commands that concern other types of database objects would lack the specific context of tracking Delta table operations. Therefore, using "DESCRIBE HISTORY" is the correct approach to accessing the relevant history for a Delta table.