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MAPGIS system adopts service-oriented design idea and multi-layer architecture, and realizes data organization oriented to spatial entities and their relationships, efficient storage and indexing of massive spatial data, large-scale multidimensional dynamic spatial information base, modeling and analysis of three-dimensional entities. It has TB-level spatial data processing capability, and can support distributed computing of spatial data in local and wide area networks, distribution and sharing of distributed spatial information, networked spatial information services, and massive and distributed national spatial infrastructure construction. MAPGIS has the following characteristics:

(1) adopts a distributed cross-platform multi-layer and multi-level architecture and adopts the design idea of "service-oriented".

(2) It has a geographic entity-oriented spatial data model, which can describe any complex spatial and non-spatial features and fully express the relationship between space, non-space, entity's spatial * * * and multiplicity.

(3) It has the ability to store and manage massive spatial data, store vector, raster, image and 3D in a four-in-one way, and efficiently index the space.

(4) The time evolution of a single entity can be realized by adopting the spatio-temporal data processing model combining version with increment and the implementation scheme of "tuple-level ground state+increment correction method".

(5) Version and long transaction mechanism with version management and conflict detection mechanism.

(6) Workflow management and control engine based on network topology data model can realize flexible adjustment and customization of business, and solve the seamless integration of GIS and OA.

(7) The standard adaptive spatial metadata management system realizes the collection, storage, database building, query and publication of metadata, supports SRW protocol and has the ability of distributed retrieval.

(8) Support true 3D modeling and visualization, effectively store and manage 3D massive data, quickly establish 3D professional models, and fully visualize and integrate 3D data.

Provide spatial information application services based on SOAP and XML, follow the OpenGIS specification, and support WMS, WFS, WCS and GLM3. Support Internet and wireless Internet, and support various intelligent mobile terminals.

The selection of GIS platform mainly considers the following three aspects:

(1) System Extensibility In the era of increasingly mature network technology and environment, any information system should not exist in isolation, let alone become an "island" in the information ocean. It is a good choice to adopt "overall planning and step-by-step implementation" in system design and implementation. To achieve this, the "scalability" of the platform on which the system depends is the key, which can ensure that the step-by-step implementation of the system will not be caught in a dilemma because of the upgrade of the platform and the expansion of the system scale and functional requirements.

(2) The integrated land geographic information application system needs to be integrated with other systems, such as MIS (Management Information System), to meet the demand. So we often talk about the so-called "seamless integration". The pursuit of "seamless" is actually because many software systems (including GIS platforms) are "seamless" when connecting with external systems, and cannot be well integrated and integrated.

(3) Security of the system The security of the system should have three meanings: one is the robustness of the system itself, that is, the system should have the characteristics that it can not crash to different types and scales of data and users, as well as a flexible and powerful recovery mechanism; Second, the system should have a perfect authority control mechanism to ensure that the system is not intentionally or unintentionally destroyed; Thirdly, the system should have the ability to ensure data security and consistency in the environment of concurrent response and interactive operation.