Episode 32: AWS SAA-C03 Databases - Quick Revision + 13 Exam Questions

🎁 Free SAA-C03 cheat sheet for this series - link at the bottom.

Topic challenge #2! A 3-minute database revision to jog your memory, then 13 database exam questions with full answers - and why every wrong option is wrong.

🆕 THE FORMAT

🧠 Quick revision first (skip it if you know it cold)

📝 Then 13 database scenario questions

⏱️ A pause after each to lock in YOUR answer

✅ The answer + WHY it's right

❌ WHY each wrong option is wrong

Because on the real exam, eliminating the plausible-but-wrong options is the whole game.

🧠 QUICK REVISION COVERS

• OLTP vs OLAP (transactional vs analytical)

• RDS vs Aurora vs Aurora Serverless

• Multi-AZ (failover) vs read replicas (scaling) - don't mix them up!

• DynamoDB capacity modes, DAX, Global Tables, Streams

• ElastiCache: Redis vs Memcached

• Neptune (graph) & Redshift (warehouse)

📋 THE 13 QUESTIONS TEST

• Read replicas (offload heavy reads)

• Aurora Global Database (multi-region relational)

• RDS Proxy (Lambda connection pooling)

• DynamoDB on-demand (serverless NoSQL)

• DMS + Schema Conversion Tool (cross-engine migration)

• DAX (microsecond DynamoDB reads)

• Multi-AZ (automatic relational failover)

• Aurora (high-perf MySQL, 15 replicas)

• DynamoDB TTL (auto-expire items)

• Point-in-time recovery (restore to a moment)

• Neptune (graph / friends-of-friends)

• ElastiCache Redis (feature-rich cache)

• Redshift + Spectrum (warehouse + query S3)

⚡ THE CORE SKILL

Databases is about matching the data shape to the right service:

• Relational vs NoSQL

• Transactional (OLTP) vs analytical (OLAP)

• Availability (Multi-AZ) vs scaling (read replicas)

• Single region vs multi-region

• Simple cache (Memcached) vs feature-rich (Redis)

Spot which axis the question is testing, and the answer falls out.

💡 KEY DISTINCTIONS DRILLED

• Multi-AZ (failover) vs read replicas (read scaling)

• RDS vs Aurora vs DynamoDB

• DAX (DynamoDB cache) vs ElastiCache (general cache)

• Redis (persistence, HA) vs Memcached (simple)

• Redshift (warehouse) vs Athena (ad-hoc S3)

• Neptune (graph) for connected data

🎓 SCORING

Got 9+ right (~70%)? Your database knowledge is in solid shape. Missed some? Databases are heavily tested - now you know exactly where to focus.

🎧 Topic challenge #2! Security, storage & compute coming next.

📚 Subscribe to keep testing yourself right up to exam day.

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📚 FREE STUDY HELP FOR SAA-C03

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✅ Free cheat sheet pack - one page per exam domain, incl. Multi-AZ vs read replicas (the #1 database trap). No catch.

👉 https://payhip.com/b/Zv5hd

🎯 Want more practice like today's questions?

104 scenario questions that explain why the right answer is right AND why every wrong option is wrong. Works on your phone or laptop.

👉 https://payhip.com/b/CLvcu

🏷️ Listeners get 20% off with code PASS

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#AWS #SAAC03 #Databases #RDS #DynamoDB #Aurora #PracticeExam #SolutionsArchitect #AWSCertification

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