Enable collaborative graphics editing in mobile environment

The proliferation of computer devices and wireless networks allows users to access information and collaborative edit documents with others from anywhere and at anytime. Mobile network and device capabilities constrain the application implementation, which implies that the storage space and computing power is limited and network is unreliable. This paper presents a collaborative graphics editing system that can work well in mobile environment. To maintain the consistency of the replicas that dispersed on mobile sites, a semi-replicated architecture is proposed and the corresponding consistency schema is also presented. The schema is realized in MCES - a prototype system of collaborative graphics editing system that can work well in mobile environment.