Episode 32: AWS SAA-C03 Databases - Quick Revision + 13 Exam Questions
Notas do episódio
🎁 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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