There are four typical data cube computation methods: Multiway, BUC, H-cubing, and Star-cubing. Based on your implementation, discuss the following:

i. What challenging computation problems are encountered as the number of dimensions grows large?

ii. How can iceberg cubing solve the problems of part (a) for some data sets (and characterize such data sets)?

iii. Give one simple example to show that sometimes iceberg cubes cannot provide a good solution.