Databricks Data Engineer Professional Question 132
Select 3You are working on a data pipeline in Databricks that involves promoting raw IoT sensor data from the bronze table to the silver table. Which of the following objectives should you focus on during this transformation process?
- A
Filtering out corrupt or incomplete records to ensure data quality
- B
Aggregating data to calculate high-level metrics for business reporting
- C
Standardizing data formats to ensure consistency across records
- D
Enriching the data with additional context, such as joining with reference datasets
- E
Archiving all raw data to an external storage system for long-term retention
Show answer and explanation
Correct answers: A, C, D
Explanation
The bronze-to-silver transformation focuses on improving data quality, ensuring consistency, and enriching the data to make it more usable for downstream processes. This typically involves cleaning data (e.g., removing corrupt records), standardizing formats, and adding context by joining with reference datasets. Aggregation and business reporting are generally performed during the silver-to-gold transformation, and archiving is not directly related to this process.
- A. Correct.
Correct. One key objective during the bronze-to-silver transformation is to filter out invalid or incomplete records to improve data quality and ensure downstream processes work correctly.
- B. Incorrect.
Incorrect. Aggregation typically happens during the silver-to-gold transformation stage, where data is prepared for analytics and business reporting.
- C. Correct.
Correct. Standardizing data formats is important during this stage to prepare the data for downstream processing and ensure consistency.
- D. Correct.
Correct. Enriching the data with additional information, such as combining it with reference datasets, is a common objective during the silver transformation stage to make the data more meaningful.
- E. Incorrect.
Incorrect. While archiving raw data is important for historical purposes, it is not a direct objective of the bronze-to-silver transformation process.