Purpose: Stores general performance information for a question (date, cohort size, etc).
|id||int||primary key added in Rogo 7.2|
|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|