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Google Professional Cloud Developer Exam - Topic 3 Question 71 Discussion

You work for an organization that manages an online ecommerce website. Your company plans to expand across the world; however, the estore currently serves one specific region. You need to select a SQL database and configure a schema that will scale as your organization grows. You want to create a table that stores all customer transactions and ensure that the customer (CustomerId) and the transaction (TransactionId) are unique. What should you do?
C) Create a Cloud Spanner table that has TransactionId and CustomerId configured as primary keys. Use a random string (UUID) for the TransactionId.
A) Create a Cloud SQL table that has TransactionId and CustomerId configured as primary keys. Use an incremental number for the TransactionId.
B) Create a Cloud SQL table that has TransactionId and CustomerId configured as primary keys. Use a random string (UUID) for the Transactionid.
D) Create a Cloud Spanner table that has TransactionId and CustomerId configured as primary keys. Use an incremental number for the TransactionId.

Google Professional Cloud Developer Exam - Topic 3 Question 71 Discussion

Actual exam question for Google's Professional Cloud Developer exam
Question #: 71
Topic #: 3
[All Professional Cloud Developer Questions]

You work for an organization that manages an online ecommerce website. Your company plans to expand across the world; however, the estore currently serves one specific region. You need to select a SQL database and configure a schema that will scale as your organization grows. You want to create a table that stores all customer transactions and ensure that the customer (CustomerId) and the transaction (TransactionId) are unique. What should you do?

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Suggested Answer: C

by Andra at Oct 18, 2023, 02:46 AM

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Maurine
6 months ago
I think B is the best choice for avoiding collisions!
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Destiny
6 months ago
D? Really? Incremental IDs in a global context? Seems risky.
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Johana
6 months ago
C sounds interesting, but does it really scale better than A?
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Vi
6 months ago
I prefer B, UUIDs are more unique and safer!
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Shanda
6 months ago
A is the way to go! Incremental IDs are easy to manage.
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Josefa
7 months ago
This is a tricky one. I'm not super familiar with the differences between Cloud SQL and Cloud Spanner, so I'm not sure which one to choose. And I'm also not sure if I should use an incremental number or a random string for the TransactionId. I guess I'll have to do some more research before deciding.
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Lisandra
7 months ago
Okay, let me think this through. I want to make sure the database can scale as the business grows, so I'm leaning towards Cloud Spanner. And using a random string (UUID) for the TransactionId seems like a good way to ensure uniqueness. I think I'll go with option C.
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Verlene
7 months ago
Hmm, I'm a bit unsure about this one. Should I use Cloud SQL or Cloud Spanner? I know Spanner is supposed to be more scalable, but I'm not sure if that's really necessary for this use case. Maybe I'll play it safe and go with Cloud SQL.
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Francine
7 months ago
This seems like a pretty straightforward database design question. I'd go with option B - using a random string (UUID) for the TransactionId. That way, I can ensure both the CustomerId and TransactionId are unique.
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Wei
8 months ago
I vaguely remember that using incremental numbers can lead to issues with scalability, especially in distributed systems. Maybe I should go with a UUID instead?
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Nobuko
8 months ago
I'm leaning towards option C because using a UUID for TransactionId seems safer for uniqueness, but I can't recall if we covered the performance implications.
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Eva
8 months ago
I think we practiced a similar question where we had to choose between Cloud SQL and Cloud Spanner. I feel like Cloud Spanner is more scalable for global expansion.
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Felicidad
8 months ago
I remember discussing the importance of primary keys in our database schema, but I'm not sure if incremental numbers or UUIDs are better for TransactionId.
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Nicolette
8 months ago
Okay, I've got this. The seller's reasons for deciding whether to bid would be captured in an "opportunity assessment" - that's the correct answer here.
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Krystal
8 months ago
Hmm, I'm not totally sure about this one. The options seem pretty similar - I'll have to think it through carefully. Maybe I can eliminate a couple of the choices first.
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Paulina
8 months ago
Hmm, I'm a bit unsure about this one. The image shows a tabbed interface, but I'm not totally clear on the hierarchy of the widgets involved. I'll need to double-check my understanding of TabBar and TabBarView.
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Bobbie
8 months ago
This reminds me of a practice question about address security vulnerabilities. I think the answer might actually be true.
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Theresia
2 years ago
That's a good point. If performance is a concern, then option D might be the way to go. But I'm worried about the limitations of Cloud Spanner compared to Cloud SQL.
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Glory
2 years ago
I agree, but what about the performance implications of using a UUID? Aren't incremental numbers generally faster for database lookups?
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Jani
2 years ago
Definitely, and we need to make sure the transaction and customer IDs are unique. I'm leaning towards option B or C, since using a random string (UUID) for the TransactionId seems like a more robust solution.
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Lai
2 years ago
This exam question is a bit tricky, but I think I've got it figured out. The key is to choose a database solution that can scale as the organization grows globally.
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