Hypothetical Analysis on Basis of View
With the development of computer’s hardware, main memory becomes bigger and bigger and can hold more data, so some operation before need disk I/O, now can be completed in main memory. In OLAP what-if or hypothetical analysis may need modify data or alter structure of cube, it should recalculate cube and is a long process. This paper presents how to do What-if analysis in main memory database environments and the experience shows that main memory OLAP is obvious superior to disk OLAP.
G. L. Wang and Z. Q. Wang, "Hypothetical Analysis on Basis of View", Applied Mechanics and Materials, Vols. 44-47, pp. 4007-4011, 2011