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Question 216 - Professional Data Engineer discussion

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You need to create a new transaction table in Cloud Spanner that stores product sales dat a. You are deciding what to use as a primary key. From a performance perspective, which strategy should you choose?

A.
The current epoch time
Answers
A.
The current epoch time
B.
A concatenation of the product name and the current epoch time
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B.
A concatenation of the product name and the current epoch time
C.
A random universally unique identifier number (version 4 UUID)
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C.
A random universally unique identifier number (version 4 UUID)
D.
The original order identification number from the sales system, which is a monotonically increasing integer
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D.
The original order identification number from the sales system, which is a monotonically increasing integer
Suggested answer: C
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asked 18/09/2024
Ivan Galir
47 questions
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