Cooperative Concurrency Control for Design Environment

In this paper, we present a new model for concurrency control that supports cooperation of design tools and de-signers in a design environment. We capture characteristic access and cooperation behaviour of design tools by activ-ity types to guide a concurrency control component in ac-cess synchronization, conflict handling and inter-tool communication. Activity types allow to characterize coop-erative work situations more precisely. This allows to im-prove designers awareness of conflicts in an environment of concurrently running design tools and supports them in interactive conflict resolution.