Get Databricks Databricks-Certified-Data-Engineer-Associate Exam Dumps

Which of the following Structured Streaming queries is performing a hop from a Silver table to a Gold table?

A.

B.

C.

D.

E.

A data engineer is designing a data pipeline. The source system generates files in a shared directory that is also used by other processes. As a result, the files should be kept as is and will accumulate in the directory. The data engineer needs to identify which files are new since the previous run in the pipeline, and set up the pipeline to only ingest those new files with each run.

Which of the following tools can the data engineer use to solve this problem?

A data engineer is attempting to drop a Spark SQL table my_table. The data engineer wants to delete all table metadata and data.

They run the following command:

DROP TABLE IF EXISTS my_table

While the object no longer appears when they run SHOW TABLES, the data files still exist.

Which of the following describes why the data files still exist and the metadata files were deleted?

A data engineer only wants to execute the final block of a Python program if the Python variable day_of_week is equal to 1 and the Python variable review_period is True.

Which of the following control flow statements should the data engineer use to begin this conditionally executed code block?

A data engineering team has two tables. The first table march_transactions is a collection of all retail transactions in the month of March. The second table april_transactions is a collection of all retail transactions in the month of April. There are no duplicate records between the tables.

Which of the following commands should be run to create a new table all_transactions that contains all records from march_transactions and april_transactions without duplicate records?

A.

CREATE TABLE all_transactions AS

SELECT * FROM march_transactions

INNER JOIN SELECT * FROM april_transactions;

B.

CREATE TABLE all_transactions AS

SELECT * FROM march_transactions

UNION SELECT * FROM april_transactions;

C.

CREATE TABLE all_transactions AS

SELECT * FROM march_transactions

OUTER JOIN SELECT * FROM april_transactions;

D.

CREATE TABLE all_transactions AS

SELECT * FROM march_transactions

INTERSECT SELECT * from april_transactions;

E.

CREATE TABLE all_transactions AS

SELECT * FROM march_transactions

MERGE SELECT * FROM april_transactions;