Suppose that a data warehouse consists of the four dimensions; date, spectator, location, and game, and the two measures, count and charge, where charge is the fee that a spectator pays when watching a game on a given date. Spectators may be students, adults, or seniors, with each category having its own charge rate. a) Draw a star schema diagram for the data b) Starting with the base cuboid [date; spectator; location; game], what specific OLAP operations should perform in order to list the total charge paid by student spectators at GM Place in 2004?

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b) The specific OLAP operations to be performed are:

1. Roll-up on date from date id to year.

2. Roll-up on spectator from spectator id to status.

3. Roll-up on location from location id to location name.

4. Roll-up on the game from game id to all.

5. Dice with status= “students”, location name= “GM Place”, and year=2004

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