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Databricks Certified Data Engineer Professional · Databricks
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Correct: B - This command creates a table. Delta :ake writes the results of the SQL query as Parquet files to DBFS. The table becomes a static snapshot of the data at creation time. Incorrect: A, D - Both describe VIEW behavior, where the query logic executes each time the view is queried. C - CTAS creates a static snapshot that does not incrementally update. E - The transaction log tracks changes to the 'recent_orders' table, not versions of the source table. Results are saved once at creation time.
In the Question they have mentioned that Correct statement that defines the querying of recent_order table. Now, The table is already created that is existing table(registered table), So the create query is already executed and table is available in DBFS. Hence, when the querying the recent_orders table, it fetches from DBFS the existing table.
Correct answer is B, because: 1) Table "recent_orders" was already created by provided SQL. 2) The question is "Which statement describes the results of querying recent_orders?" It's mean that D isn't correct: "All logic will execute at query time and return the result of joining the VALID versions of the source tables at THE TIME the query began." So D means that the joining executes at the time of another query to the table.