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NEW QUESTION 43
A data engineering team needs to query a Delta table to extract rows that all meet the same condi-tion.
However, the team has noticed that the query is running slowly. The team has already tuned the size of the
data files. Upon investigating, the team has concluded that the rows meeting the condition are sparsely located
throughout each of the data files.
Based on the scenario, which of the following optimization techniques could speed up the query?

A. Write as a Parquet fileB. Data skippingC. Tuning the file sizeD. Bin-packingE. Z-Ordering

Answer: E

 

NEW QUESTION 44
Which of the following commands will return records from an existing Delta table my_table where duplicates
have been removed?

A. 1. DROP DUPLICATES
2. FROM my_table;B. 1. SELECT *
2. FROM my_table
3. WHERE duplicate = False;C. 1. MERGE INTO my_table a
2. USING new_records b ON a.id = b.id
3. WHEN NOT MATCHED
4. THEN INSERT *;D. 1. MERGE INTO my_table a
2. USING new_records b;E. 1. SELECT DISTINCT *
2. FROM my_table;

Answer: E

 

NEW QUESTION 45
Which of the following describes a benefit of a data lakehouse that is unavailable in a traditional data
warehouse?

A. A data lakehouse captures snapshots of data for version control purposesB. A data lakehouse couples storage and compute for complete controlC. A data lakehouse provides a relational system of data managementD. A data lakehouse enables both batch and streaming analyticsE. A data lakehouse utilizes proprietary storage formats for data

Answer: D

 

NEW QUESTION 46
......


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