Purpose: Stores general performance information for a question (date, cohort size, etc).
Joins: performance_main
| Field | Type | Purpose |
|---|---|---|
| perform_id | int(11) | Joins with id from performance_main |
| part_no | tinyint(4) | Number of the question part being stored. An MCQ would only have 1 part whereas an extended matching would have multiple. |
| p | tinyint(4) | Performance 'P' value of that part of the question |
| d | tinyint(4) | Discrimination 'D' value of that part of the question |