Google Exam Professional Cloud Developer Topic 15 Question 102 Discussion

Actual exam question for Google's Professional Cloud Developer exam

Question #: 102
Topic #: 15

[All Professional Cloud Developer Questions]

You are a developer at a social media company The company runs their social media website on-premises and uses MySQL as a backend to store user profiles and user posts. Your company plans to migrate to Google Cloud, and your team will migrate user profile information to Firestore. You are tasked with designing the Firestore collections. What should you do?

ACreate one root collection for user profiles, and store each user's post as a nested list in the user profile document.

BCreate one root collection for user profiles, and create one root collection for user posts.

CCreate one root collection for user profiles, and create one subcollection for each user's posts.

DCreate one root collection for user posts, and create one subcollection for each user's profile

Show Suggested Answer

Suggested Answer: C

by Kristofer at Feb 09, 2025, 09:12 AM

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Larue

3 days ago

Option C is the way to go. Subcollections are your friend when it comes to organizing data in Firestore. Keep it clean and simple.

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Dell

7 days ago

Haha, Option D is like putting the cart before the horse. Why would you have a root collection for posts before you even have user profiles?

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Shannan

15 days ago

I see both sides, but I think option C allows for better scalability in the long run.

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Melinda

16 days ago

Option A sounds like a disaster waiting to happen. Nesting user posts in the profile document? That's just asking for performance issues down the line.

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Marylyn

19 days ago

I disagree, I believe option B is more efficient. Separating profiles and posts makes it easier to manage.

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Janey

22 days ago

I'd go with Option B. Keeping the user profiles and posts in separate root collections will make the data structure more scalable in the long run.

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Bo

24 days ago

Option C makes the most sense to me. Having a subcollection for each user's posts keeps the data organized and easy to query.

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Arlyne

3 days ago

I think option C is the way to go as well. It will make querying user posts much easier.

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Rhea

10 days ago

I agree, option C seems like the best choice for organizing the data efficiently.

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Glenn

26 days ago

I think option C is the best choice. It keeps user profiles and posts organized.

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