DEA-C01 Data Ingestion and Transformation Practice Question
A data engineer needs to transform JSON data into CSV format using AWS Glue. The transformation is simple and must be executed on a schedule. Which Glue component is MOST suitable?
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
✓
Glue ETL job
A Glue ETL job is the most suitable component because it can execute a script (Python/Scala) to transform JSON data into CSV format and can be scheduled to run on a recurring basis. Glue Crawlers only discover and catalog metadata, not transform data. The Glue Data Catalog is a metadata repository, not a transformation tool. A Glue Development Endpoint is used for interactive development and testing, not for scheduled production jobs.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Glue Crawler
Why it's wrong here
Crawlers discover schema, they do not transform data.
- ✗
Glue Data Catalog
Why it's wrong here
The Data Catalog stores metadata, not transformations.
- ✗
Glue Development Endpoint
Why it's wrong here
Development endpoints are for writing and testing scripts, not production scheduling.
- ✓
Glue ETL job
Why this is correct
Glue ETL jobs run transformations and can be scheduled.
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