When facing complex requirements of city development, ever-growing spatial data, rapid development of geographical
business and increasing business complexity, collaboration between multiple users and departments is needed urgently,
however conventional GIS software (such as Client/Server model or Browser/Server model) are not support this well.
Collaborative application is one of the good resolutions. Collaborative application has four main problems to resolve:
consistency and co-edit conflict, real-time responsiveness, unconstrained operation, spatial data recoverability. In paper,
application model called AMCM is put forward based on agent and multi-level cache. AMCM can be used in mixed
network structure and supports distributed collaborative. Agent is an autonomous, interactive, initiative and reactive
computing entity in a distributed environment. Agent has been used in many fields such as compute science and
automation. Agent brings new methods for cooperation and the access for spatial data. Multi-level cache is a part of full
data. It reduces the network load and improves the access and handle of spatial data, especially, in editing the spatial
data. With agent technology, we make full use of its characteristics of intelligent for managing the cache and cooperative
editing that brings a new method for distributed cooperation and improves the efficiency.
With the rapid urbanization process, some problem such as unlimited city expansion occurred. When facing these
problems, ever-growing urban data and increasing planning complexity, a scalable, extensible urban planning
supervising and management information system is needed urgently. PlanSuper is such a system that can deal with these
problems. In response to the status and problems in urban planning, the scalability and extensibility of PlanSuper are
introduced which can be seen as business-oriented workflow extensibility, scalability of DLL-based architecture,
flexibility on platforms of GIS and database and so on. It is verified that PlanSuper system has good extensibility and
scalability in supervising and management of urban planning.
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