data mining homework

Design a data warehouse for a university's gradebook data to analyze the class performances. Suppose the

data warehouse consisting of the following dimensions: department, semester, course, student, instructor,

and gradebook; and a set of measures you would like to define.

1. Draw a star-schema, based on your consideration of power and convenience of analysis of the


2. Is top 10% in a class a holistic or algebraic measure? Discuss how to develop an efficient (maybe

approximate) methods to compute a query like: find those Engineering students whose final score

is within top 10% in class in at least 80% of the CS courses that he or she has taken?

3. Is it a good idea to merge this data warehouse and the current university's gradebook database

system together into one big data management/analysis system? Why?

Fähigkeiten: Datensuche

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