MapGIS Data Management--data management and display model architecture

In the process of learning and development of model framework learning is particularly important, especially GIS two times development is closely integrated with the principle of GIS, the following describes the Mapgis data management and display model.

(This model is relatively simple, suitable for beginners to learn to understand)

Learning this model can first contact Mapgis related operations, wherein the MAPGIS K9 data management and map management and the same model, corresponding to MAPGISK9 tools have map editor, GDB Enterprise Manager. The above model is used in MapGIS 10. Corresponding tool products for the workspace, catalog data management and other content.

The model is roughly divided into two lines in the field spatial data and map documents.

From the spatial data, all spatial data are stored in the field database, the field database can be derived from local HDF local data database, or from SQL, Oracle and other relational database files. As shown in the spatial data management model

From the map document, all the layers are map managed, and the map is managed by the maps and graphics files. In other words, a map document that corresponds to multiple maps with multiple layers in one map.

From the example above we can see: Map documents, maps, layers do not have storage space data, the map is made of different layers of configuration, such as dynamic annotation, display scale, self-drawing drive and so on. The map document does the corresponding layout configuration. Real spatial data is stored in the database.

So what's the relationship between the data and the layer, it can be understood that the layer is bound data to display, that is, the map can only display the layer, but not the data. The data must be represented by a layer.

MapGIS Data Management--data management and display model architecture