The architecture of a coordination system can naturally be viewed as an organized society of individuals (i. e. ,as a computational organization). For this reason,we believe organizational model should play a central role in the coordination systems including coordination association. To this end, the concepts of role models, architecture styles ,and coordination laws are increasingly being used to specify and design coordination systems. However,this is not th full picture. In this paper we develop three organizational concepts - organizational role model,organizational structure,and organizational rules - that we believe are necessary for the complete specification of computational organisations of coordination association.
