PCDE Migrate data solutions Practice Question
An organization is migrating a MySQL database to Cloud SQL using Database Migration Service (DMS). They need to ensure minimal downtime and continuous replication of changes from the source. Which type of migration job should they create?
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
✓
Continuous migration job (CDC)
Continuous (CDC) migration jobs replicate ongoing changes after the initial dump, allowing minimal downtime during cutover. One-time jobs only perform a full dump and import without ongoing replication.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Batch migration job
Why it's wrong here
There is no 'batch' migration job type in DMS.
- ✗
One-time migration job
Why it's wrong here
One-time jobs do not replicate ongoing changes, resulting in longer downtime.
- ✓
Continuous migration job (CDC)
Why this is correct
Continuous migration jobs replicate changes in real-time, minimizing downtime during cutover.
- ✗
Snapshots-only job
Why it's wrong here
Snapshots-only is not a valid DMS job type.
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