Knowledgable Location-ha,sed Services (LBS) aim at enabling mobile users to specify their requests and profiles oil the move and providing there with context-aware and personalized local information relevant to their current, activity and request. Therefore, it opens up new challenges ill data infrastructure; knowledge representations and data management etc. In this paper, firstly we will discuss the characteristics of LBS in terms of data management, and then present our data architecture. Finally, we will explain how the knowledge is incrementally set up and maintained in a nodular manner.