Blockly questionnaire ROLAP cube and correlation table

Multidimensional ROLAP cubes processed with OLAP technology. We chose the point of the solution and the point of self-assessment as the main indicators. The main dimensions of the dataset are: Task: the attributes of which are category (of the task and subtasks), critical factor, programming tool and mathematical concept. Pupil: the attributes of which are grade, orientation, Blockly Code (whether they learned or not) and Blockly year (when they learned). Solution: the attributes of which are the generic type of mistakes and typical mistakes. The average points were calculated based on the points students earned in each subtask and we presented them grouped by attributes according to our former paper. It contained comparison of the surveyors’ self-assessment points with the obtained results.