Section 3 Review
You've finished Advanced Database Testing, the third section of Database Testing. This page is a dedicated recap — bookmark it as a fast reference, separate from the modules themselves.
Section Summary
✔ Stored Procedures, Views, and Triggers — testing business logic that lives inside the database itself: a procedure's output and side effects, a view's liveness and structural restrictions, and a trigger's coverage across every distinct write path that can fire it ✔ Transactions, Locks, and Concurrency — ACID properties from a tester's perspective, and how to deliberately test for Isolation violations (lost updates, dirty reads, deadlocks) that only appear under genuine concurrent access ✔ Database Defect Investigation — a systematic, outside-in trace chain from a vague symptom (UI display → API response → query logic → underlying data) to a specific, reproducible root cause
How they build on each other: Module 7 extended this path's verification scope beyond application-triggered writes to logic the database itself runs. Module 8 extended it further, to what happens when two operations run at once — a defect class no single-operation test, however thorough, can find. Module 9 closed the section by tying every defect class from this entire path into one repeatable investigation process, so a vague bug report can be traced to a specific, known pattern rather than investigated from scratch each time.
Advanced Database Testing Quick Reference
| Defect Class | Where It's Introduced | Fastest Diagnostic |
|---|---|---|
| Trigger coverage gap | Module 7 | Test the triggering event through every distinct write path, not just one |
| Lost update | Module 8 | Deliberately run two operations concurrently against the same row |
| Deadlock | Module 8 | Look for a specific, reproducible database error, not just slowness |
| Vague "looks wrong" symptom | Module 9 | Trace outside-in: UI, then API, then query, then data |
Section 3 Knowledge Check
Five realistic scenarios. For each, decide which module's framework applies, and what you'd check first. No answers are provided here. Solutions: Section 3 Solutions.
Scenario 1: A stored procedure that applies monthly interest returns the correct calculated amount, but you haven't yet checked anything else.
Scenario 2: Two customer-service agents might edit the same customer's credit limit within seconds of each other.
Scenario 3: A customer reports their transaction history "looks incomplete" compared to their monthly email statement.
Scenario 4: A view used by a compliance dashboard needs to exclude any account still under KYC review.
Scenario 5: An operation appears to hang indefinitely under concurrent load, and you need to determine if it's a deadlock or just genuinely slow.
Continue to Section 4
Performance and Security, starting with Database Performance Testing — where this section's concurrency awareness extends into recognizing slow queries and lock contention under real load.