DEA-C01 Data Ingestion and Transformation Practice Question
A company needs to ingest data from an on-premises Oracle database into Amazon S3 for analytics. The data volume is about 1 TB initially, with daily incremental updates of about 10 GB. Which TWO services can be combined to achieve this with minimal custom code?
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
✓
Amazon S3
The correct combination is AWS DMS (Database Migration Service) for migration and Amazon S3 as the target. DMS can perform full load and ongoing replication with minimal custom code, making it suitable for the initial 1 TB load and daily 10 GB increments. AWS Glue (option A) could be used but often requires more custom code for change data capture (CDC) compared to DMS. Amazon Kinesis Data Streams (option B) is designed for real-time streaming data, not database migration. Amazon Athena (option C) is a query service, not a data movement service. Therefore, the correct answers are D (Amazon S3) and E (AWS DMS).
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 Glue
Why it's wrong here
AWS Glue lacks native connectivity to Oracle databases for incremental change data capture, requiring custom JDBC scripts or third-party connectors to extract daily 10 GB updates, which contradicts the "minimal custom code" requirement. It is tempting because Glue excels at transforming and cataloguing data already in S3, and would be correct if the ingestion step were handled separately by a service like AWS DMS or a custom extractor.
- ✗
Amazon Kinesis Data Streams
Why it's wrong here
Not designed for database migration.
- ✗
Amazon Athena
Why it's wrong here
Query service, not data ingestion.
- ✓
Amazon S3
Why this is correct
Target for the ingested data.
- ✓
AWS Database Migration Service (DMS)
Why this is correct
Handles full load and CDC from Oracle.
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 |
Go deeper
Related to this question
About these practice questions
This DEA-C01 question is part of Courseiva's 1,711-question bank — original exam-style content with full explanations and wrong-answer analysis, never real exam questions or exam dumps. Learn why practice questions differ from exam dumps →
Same concept, more angles
1 more way this is tested on DEA-C01
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. A company needs to ingest data from an on-premises Oracle database into Amazon S3 on a daily basis. The data volume is about 100 GB per day. Which AWS service is BEST suited for this task?
easy- A.Use AWS DataSync to copy the database files to S3.
- B.Use Amazon Kinesis Data Firehose with a database connector.
- ✓ C.Use AWS Database Migration Service (DMS) to replicate data to S3.
- D.Use AWS Glue to extract data from Oracle and write to S3.
Why C: AWS Database Migration Service (DMS) can continuously replicate data from Oracle to S3, and it supports full load and change data capture (CDC). Option A (AWS DataSync) is for file-based transfers, not database replication. Option B (Amazon Kinesis Data Firehose) is for streaming data, not database pull. Option D (AWS Glue) is for ETL but does not natively support continuous CDC from Oracle.
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.