Maximum control and performance: the database filters and aggregates, Crystal receives the minimum.
4.4 · Application
9. Farès writes a SQL command for the top customers of the chosen year. Which form is correct and safe?
Parameterized filter + server-side aggregation, never concatenation or hard-coded credentials.
4.4 · Arbitration
10. Farès must combine the orders database with a non-joinable discounts file, on a large monthly volume. What does he do?
Different non-joinable sources = subreports; heavy recurring case = consolidate upstream.
4.5 · Application
11. Farès wants a regional summary with detail on click. What does he do?
Hidden details = summary; clicking a group expands its detail on screen.
4.5 · Arbitration
12. Management wants the dashboard both projected in a meeting and archived on paper. What does Farès decide?
Drill-down does not print: screen for exploring, detailed paper for archiving.
What's next?
Score ≥ 80%: move to Level 5 — distribution, integration and best practices, and industrialize your expert reports (SQL views, summary cross-tabs, fair alerts).
Score 50-79%: review the missed sections (subreports 4.1, charts 4.2, cross-tab 4.3, SQL 4.4, interactivity 4.5), reread the explanations above, then retake the test.
Score < 50%: restart the level from 4.1, practicing each move (group-level linked subreport, Chart Expert, Cross-Tab Expert, parameterized SQL command, alert + drill-down), then retry the exam with a fresh mind.