Google Professional Data Engineer Exam - Topic 2 Question 14 Discussion

Actual exam question for Google's Professional Data Engineer exam

Question #: 14
Topic #: 2

[All Professional Data Engineer Questions]

You receive data files in CSV format monthly from a third party. You need to cleanse this data, but every third month the schema of the files changes. Your requirements for implementing these transformations include:

Executing the transformations on a schedule

Enabling non-developer analysts to modify transformations

Providing a graphical tool for designing transformations

What should you do?

AUse Cloud Dataprep to build and maintain the transformation recipes, and execute them on a scheduled basis

BLoad each month's CSV data into BigQuery, and write a SQL query to transform the data to a standard schema. Merge the transformed tables together with a SQL query

CHelp the analysts write a Cloud Dataflow pipeline in Python to perform the transformation. The Python code should be stored in a revision control system and modified as the incoming data's schema changes

DUse Apache Spark on Cloud Dataproc to infer the schema of the CSV file before creating a Dataframe. Then implement the transformations in Spark SQL before writing the data out to Cloud Storage and loading into BigQuery

Show Suggested Answer

Suggested Answer: D

by Judy at May 04, 2022, 12:32 PM

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Val

5 months ago

Wow, I didn't know schemas could change that often!

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Alayna

5 months ago

B seems more flexible for complex queries, though.

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Claribel

5 months ago

Not sure about that, isn't it limited in some ways?

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Amalia

5 months ago

Totally agree, Cloud Dataprep is super user-friendly!

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Roselle

5 months ago

I think option A is the best choice for non-developers.

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Stephaine

5 months ago

Apache Spark sounds powerful, but I’m uncertain if the graphical tools are as accessible for analysts compared to Cloud Dataprep.

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Sharita

5 months ago

I practiced writing Cloud Dataflow pipelines in Python, but I feel like that might be too technical for the analysts to modify easily.

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Shawnta

5 months ago

I remember we discussed how Cloud Dataprep is user-friendly for non-developers, but I'm not sure if it can handle schema changes every third month effectively.

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Jarvis

6 months ago

I think using BigQuery with SQL queries could be a solid approach, but it might get complicated with the schema changes.

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Phuong

6 months ago

This question seems straightforward, I'll carefully read through the options and select the two correct answers.

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Ivette

6 months ago

Okay, let me think this through step-by-step. I need to create a new file system with the same properties as the one shown, so I'll need to pay attention to the mountpoint and compression settings.

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