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Exam Professional Cloud Database Engineer topic 1 question 145 discussion

Actual exam question from Google's Professional Cloud Database Engineer
Question #: 145
Topic #: 1
[All Professional Cloud Database Engineer Questions]

You are migrating an on-premises database to Spanner. There are a few tables, each with a few hundred records that do not have a primary key on the source database. You need to migrate all of the tables over to the news database while avoiding hot-spotting issues. What should you do?

  • A. Load the data into Spanner, and designate a primary key later based on business need.
  • B. Use the GENERATE_UUID() function to generate universally unique identifier (UUID) values with the STRING(36) data type when you do the migration.
  • C. During the migration, swap the order of keys so that the column that contains the monotonically increasing or decreasing value is the first key par.
  • D. Migrate the tables with no primary key to maintain consistency with source.
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Suggested Answer: B 🗳️
by WOOJONE at May 29, 2025, 1:08 a.m.

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