DEA-C01 Data Ingestion and Transformation Practice Question
A data engineer needs to ingest data from an on-premises Oracle database into Amazon S3 for analytics. The data changes frequently and the engineer wants to capture both initial load and incremental changes with minimal latency. Which TWO AWS services should be used together? (Choose TWO.)
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 Database Migration Service (DMS)
AWS DMS (Option A) is correct because it can perform an initial load of data from an on-premises Oracle database to Amazon S3 and then continuously replicate incremental changes using change data capture (CDC) with minimal latency. Amazon Kinesis Data Streams (Option E) complements DMS by enabling near-real-time streaming of data changes, which can be further processed or stored in S3. Option B (Lambda) is not a direct replacement for database replication; it can process events but does not natively capture database changes. Option C (Glue) is an ETL service, not designed for real-time replication. Option D (Transfer Family) is for file transfers, not database 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.
- ✓
AWS Database Migration Service (DMS)
Why this is correct
DMS can perform ongoing replication from Oracle to S3.
- ✗
AWS Lambda
Why it's wrong here
Lambda can process events but not directly replicate databases.
- ✗
AWS Glue
Why it's wrong here
Glue is for ETL jobs, not real-time replication.
- ✗
AWS Transfer Family
Why it's wrong here
Used for SFTP/FTPS transfers, not database replication.
- ✓
Amazon Kinesis Data Streams
Why this is correct
Kinesis can stream change data captured by DMS to S3.
Quick reference
AWS S3 Storage Class Comparison
| Storage Class | Min Duration | Retrieval | Use Case |
|---|---|---|---|
| S3 Standard | None | Immediate | Frequently accessed data |
| S3 Standard-IA | 30 days | Immediate | Infrequent access, rapid retrieval |
| S3 One Zone-IA | 30 days | Immediate | Non-critical infrequent data |
| S3 Intelligent-Tiering | None | Immediate–hours | Unknown or changing access patterns |
| S3 Glacier Instant | 90 days | Milliseconds | Archive with instant retrieval |
| S3 Glacier Flexible | 90 days | Minutes–hours | Archive, flexible retrieval |
| S3 Glacier Deep Archive | 180 days | Hours | Long-term compliance archive |
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This DEA-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 DEA-C01 exam.