AWS Certified Cloud Practitioner (CLF-C02) — Question 102

Which AWS service can run a managed PostgreSQL database that provides online transaction processing (OLTP)?

Answer options

• A. Amazon DynamoDB
• B. Amazon Athena
• C. Amazon RDS
• D. Amazon EMR

Correct answer: C

Explanation

Amazon RDS is specifically designed to handle relational databases, including PostgreSQL, and supports OLTP workloads effectively. In contrast, Amazon DynamoDB is a NoSQL database service, Amazon Athena is an interactive query service for analyzing data in S3, and Amazon EMR is used for big data processing, none of which are tailored for managed OLTP PostgreSQL databases.