Question 472 of 1,446
Design innovative, scalable, and highly available cloud database solutions →mediumMultiple ChoiceObjective-mapped
PCDE Practice Question: Design innovative, scalable, and highly available cloud database solutions
A company is migrating a relational database to Cloud Bigtable. The source schema has a customers table and an orders table with a foreign key. Which data model approach is recommended for Bigtable?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Denormalize and store orders as a column family within the customer row
Bigtable is a wide-column NoSQL database, so denormalization is recommended to avoid joins. Embedding order data within customer rows (or using a single table with composite keys) is common. Referential integrity is not enforced.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Create a view to join the tables
Why it's wrong here
Bigtable does not support views or joins.
- ✗
Maintain two separate tables with foreign keys
Why it's wrong here
Bigtable does not support foreign keys or joins.
- ✗
Use Cloud Spanner to maintain relational structure
Why it's wrong here
The customer chose Bigtable, not Spanner.
- ✓
Denormalize and store orders as a column family within the customer row
Why this is correct
Denormalization is typical in Bigtable to read all related data in one row.
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Last reviewed: Jul 4, 2026
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