A data model for a supply chain is provided whereby individual working steps in a production process are defined as activities, and organized groups of such activities are defined as orders. Activities are allocated to no more than one resource and contain information concerning the start and finish...http://www.google.com.tw/patents/US6338097?utm_source=gb-gplus-share專利 US6338097 - Cross application time sheet for communicating with one or more enterprise management applications during time data entry
