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Problem 4. Snowflake Schema (18 points) Suppose that a data warehouse for Big Ten universities consists of the four dimensions: student, course, semester, and instructor,

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Problem 4. Snowflake Schema (18 points) Suppose that a data warehouse for Big Ten universities consists of the four dimensions: student, course, semester, and instructor, and two measures: avg grade and count. Each dimension has a concept hierarchy, e.g., for student, the concept hierarchy is "student

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