Community concerns the interaction, trust, relationship, and structure of
community. Forming a community requires appropriate frequency of the
interaction. A one time interaction could not create community. Trust and the
good relationship of members will sustain the community. The structures of
industry clusters vary due to the environment of collaboration. The formal
interaction, such as cluster meetings, was held once a month. Thanks to
internet technology, the informal interaction such as e-mail, chat, and web
board can be established between formal interactions. Trust and relationship
are concerned in our study, with the special relationship as “coopetition”
(cooperation and competition in the same environment) making a cluster
unique. In this study, we analyze the cluster’s relationship characteristics in
order to propose a suitable knowledge management system.