On-line Analytical Processing (OLAP) systems are based upon client/server technology. What are the main OLAP client/server components and architectures?

		The OLAP Analytical Processing Logic (ALP) perform complex transformations for business data analysis, namely aggregation, period comparisons and multi-dimensions.
		The OLAP Graphical User Interface (GUI) is placed on the computers of end-users to provide an interface through which the people can query the data warehouse.
		The OLAP Data Processing Logic (DPL) is generally a server level utility that maps requests by data analysis to proper objects in the data warehouse.
		Placement of OLAP modules depends on hardware, software, professional judgment and on the inventory of commercial-off-the-shelf vendor solutions that are already in place.