15 do all please

1. Briefly explain multidimensional analysis. 2. Name any four key capabilities of an OLAP system. Exarcises 405 1. sate any 1. What are hypercubes? How do they apply in an OLAP system? 5. What is meant by slice-and-dice? Give an example. 6. What are the essential differences between the MOLAP and ROLAP models? Also list a few similaries. 7. What are multidimensional databases? How do these store data? 8. Describe any one of the four OLAP architectural options. 9. Discuss two reasons why feeding data into the OLAP system directly from the source operational systems is not recommended. 10. Name any four factors for consideration in OLAP administration