DBS-C01 Deployment and Migration Practice Question
Which THREE factors should be considered when choosing between a homogeneous migration and a heterogeneous migration to Amazon RDS? (Select THREE.)
⚠ Common exam trap
Many exam-takers confuse migration method factors (e.g., network latency, downtime tolerance) with migration type factors (e.g., schema compatibility, licensing, performance), leading them to select A as a relevant consideration when it only applies to the migration approach, not the choice between homogeneous and heterogeneous.
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
✓
Performance requirements of the target database.
A homogeneous migration (e.g., MySQL to RDS MySQL) typically requires minimal schema changes, preserves performance characteristics, and maintains existing licensing costs. A heterogeneous migration (e.g., Oracle to RDS PostgreSQL) requires schema conversion (validating schema compatibility), may require re-architecting to meet performance requirements due to different query optimizers, and can change licensing costs (e.g., eliminating Oracle licenses). Therefore, factors B, D, and E directly influence the choice between homogeneous and heterogeneous migrations.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Network latency between source and target.
Why it's wrong here
Affects both equally.
- ✓
Performance requirements of the target database.
Why this is correct
May influence engine choice.
- ✗
Amount of application code changes needed.
Why it's wrong here
Important but not a factor for migration type choice; it's a consequence.
- ✓
Schema compatibility between source and target.
Why this is correct
Critical for heterogeneous.
- ✓
Licensing costs of the target database engine.
Why this is correct
Important cost consideration.
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