DEA-C01 Data Ingestion and Transformation Practice Question
A company wants to ingest data from an on-premises Oracle database into Amazon S3 on a daily basis. The data volume is 500 GB per transfer. Which AWS service is most appropriate for this batch ingestion?
⚠ Common exam trap
Test-takers frequently confuse AWS Glue (batch ETL) with Amazon Kinesis Data Firehose (streaming), assuming both can handle any data ingestion, but Firehose cannot pull from a relational database and is not designed for large daily batch loads.
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 Glue
AWS Glue is the most appropriate service for this batch ingestion because it is purpose-built for ETL (Extract, Transform, Load) workflows, including connecting to on-premises databases via JDBC, extracting large volumes of data (500 GB per day), and writing it to Amazon S3 in a scheduled, serverless manner. Glue's built-in crawlers and job scheduler handle daily batch runs efficiently without requiring manual infrastructure management, making it ideal for this use case.
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 it's wrong here
DMS is designed for continuous migration, not scheduled batch transfers.
- ✗
AWS Data Pipeline
Why it's wrong here
Data Pipeline is a legacy service; Glue is the modern replacement.
- ✗
Amazon Kinesis Data Firehose
Why it's wrong here
Firehose is for streaming data, not batch.
- ✓
AWS Glue
Why this is correct
Glue can run scheduled crawlers and ETL jobs for batch ingestion.
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
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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.