DBS-C01 Deployment and Migration Practice Question
A company is migrating an on-premises PostgreSQL database to Amazon RDS for PostgreSQL. The database is 2 TB and the migration must have minimal downtime. Which TWO AWS services should be used together to accomplish this?
⚠ Common exam trap
Test-takers frequently confuse AWS DataSync (file-level sync) or CloudEndure (server replication) with database-specific migration tools, overlooking that only DMS provides CDC for relational databases and SCT handles schema conversion.
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
✓
AWS Schema Conversion Tool (AWS SCT)
AWS Schema Conversion Tool (AWS SCT) is used to convert the source PostgreSQL schema and objects to be compatible with Amazon RDS for PostgreSQL, handling any heterogenous elements. AWS Database Migration Service (AWS DMS) then performs the continuous data replication from the on-premises database to RDS, enabling minimal downtime by keeping the target in sync until a cutover.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
AWS CloudFormation
Why it's wrong here
CloudFormation is for infrastructure provisioning, not data migration.
- ✗
AWS DataSync
Why it's wrong here
DataSync is for file-based data transfer, not databases.
- ✓
AWS Schema Conversion Tool (AWS SCT)
Why this is correct
AWS SCT can assess and convert schema if needed, though not strictly required for homogeneous migration.
- ✗
AWS CloudEndure Migration
Why it's wrong here
CloudEndure is for server migration, not database migration.
- ✓
AWS Database Migration Service (AWS DMS)
Why this is correct
AWS DMS handles data migration with full load and ongoing replication.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This DBS-C01 practice question is part of Courseiva's free Amazon Web Services certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the DBS-C01 exam.