Conceptually, SCM includes all value-adding activities from the extraction of raw materials through the transformation processes and through delivery to the end user. SCM spans organizational boundaries and treats the organizations within the value chain as a unified virtual business entity (1991; 1995). (1995) further expanded SCM to include recycling or reuse activities. In general, SCM seeks improved performance through elimination of waste and better use of internal and external supplier capabilities and technologies (1996).
The retailing industry has focused on different aspects of SCM, namely, location, transportation, and logistics issues. Indeed, the origin of supply chain management can be traced back to efforts to better manage the transportation and logistics functions (1997; 1995; 1994; 1993; 1991; 1987). The wholesaling and retailing industries incorporate a logistics focus within their strategic decisions. In this respect, SCM is synonymous with integrated logistics systems that control the movement of goods from the suppliers to end customers without waste (1991).
Moreover, integrated logistics