Community concerns the interaction, trust, relationship, and structure of community. Forming a community requires appropriate frequency of theinteraction. A one time interaction could not create community. Trust and thegood 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.