Question Bank Coverage & Balance
Count and difficulty
| Metric |
Count |
| Total |
72 |
| Foundational |
13 |
| Standard |
38 |
| Difficult |
20 |
| Expert-discrimination |
1 |
Correct-answer position balance
| Position |
Count |
| A |
18 |
| B |
18 |
| C |
18 |
| D |
18 |
Topic coverage
| Topic |
Questions |
| Schemes |
14 |
| Introduction |
7 |
| Keys |
7 |
| Relationships |
7 |
| Activities |
6 |
| Components |
6 |
| Physical Design |
5 |
| Domains |
4 |
| Normalization |
4 |
| Levels |
3 |
| Abstraction |
2 |
| Best Practices |
2 |
| Governance |
2 |
| Metrics |
2 |
| Tools |
1 |
Diagnostic rule
After a miss, record the confusion pair or reasoning error, not merely the topic. Useful tags include:
- entity vs instance;
- cardinality vs arity;
- composite vs compound;
- candidate vs super;
- business vs surrogate;
- relational vs dimensional;
- fact vs dimension vs grain;
- SCD 1/2/3;
- CDM/LDM/PDM/canonical;
- normalization level;
- normalize vs denormalize;
- generalize vs specialize;
- forward vs reverse;
- standards vs review vs version control vs Scorecard.
Artifact 08 should later be built from actual learner error history, not prefilled assumptions.
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