5.4. Reflection Checkpoint: Analytics & Visualization Mastery

Key Takeaways

Before proceeding, ensure you can:

• Explain the difference between ETL and ELT and why ELT is preferred in modern architectures
• Distinguish when to use Data Lake Gen2 vs. standard Blob Storage (hierarchical namespace)
• Choose between Synapse Dedicated Pool vs. Serverless Pool based on use case
• Identify the difference between Power BI Reports and Dashboards
• Explain the core benefit of OneLake and Lakehouse architecture

Self-Assessment Questions

1. What's the key feature that distinguishes Data Lake Gen2 from Blob Storage? (Answer: Hierarchical Namespace)
2. When would you use Serverless SQL Pool instead of Dedicated SQL Pool? (Answer: Ad-hoc queries, pay-per-query, no provisioning)
3. An executive needs a single-page view combining KPIs from three department reports. Report or Dashboard? (Answer: Dashboard)

Connecting Forward

In Phase 6, you'll shift from content knowledge to exam strategy. You'll learn how to decode question keywords, manage time effectively, and avoid common exam traps. The concepts from Phases 1-5 will be tested through scenario-based questions—Phase 6 prepares you to recognize patterns and select correct answers efficiently.