The university computer lab’s director keeps track of lab usage, as measured by the number of students using the lab. This function is important for budgeting purposes. The computer lab director assigns you the task of developing a data warehouse to keep track of the lab usage statistics. The main requirements for this database are to:

• Show the total number of users by different time periods.

• Show usage numbers by time period, by major, and by student classification.

• Compare usage for different majors and different semesters

Use the Ch13_P1.mdb database, which includes the following tables:

• USELOG contains the student lab access data.

• STUDENT is a dimension table that contains student data.

Given the three preceding requirements, and using the Ch13_P1.mdb data, complete the following problems:

a. Define the main facts to be analyzed. (These facts become the source for the design of the fact table.)

b. Define and describe the appropriate dimensions. (These dimensions become the source for the design of the dimension tables.)

c. Draw the lab usage star schema, using the fact and dimension structures you defined in Problems 1a and 1b.

d. Define the attributes for each of the dimensions in Problem 1b.

e. Recommend the appropriate attribute hierarchies.

f. Implement your data warehouse design, using the star schema you created in Problem 1c and the attributes you defined in Problem 1d.

g. Create the reports that will meet the requirements listed in this problem’s introduction.