Motivated by the increasing accessibility of technology, more and more spatial data are being made digitally available.
How to extract the valuable knowledge from these large (spatial) databases is becoming increasingly important to
businesses, as well. It is essential to be able to analyze and utilize these large datasets, convert them into useful
knowledge, and transmit them through GIS-enabled instruments and the Internet, conveying the key information to
business decision-makers effectively and benefiting business entities. In this research, we combine the techniques of
GIS, spatial decision support system (SDSS), spatial data mining (SDM), and ArcGIS Server to achieve the following
goals: (1) integrate databases from spatial and non-spatial datasets about the locations of businesses in Taipei, Taiwan; (2)
use the association rules, one of the SDM methods, to extract the knowledge from the integrated databases; and (3)
develop a Web-based SDSS GIService as a location-selection tool for business by the product of ArcGIS Server.