ses are indeed relational databases with special structures designed to deal with geographic information.
In summary, the ArcGIS?Transportation Data Model is designed to generate a geodatabase within ArcGIS?that will serve the needs of transportation management professionals. It takes advantage of the flexibility of Object Orientation to define entities and the relationships among those entities. These objects can be created and modified within the Visio 2000 software package in an informal Analysis Diagram and a more explicit UML notation. The UML can be used to transfer the transportation system design to a geodatabase within ArcGIS?
5. The ArcGIS?Transportation Data Model Packages There are 10 ArcGIS?Transportation Data Model packages containing more than 100 feature classes, object classes, domains and relationships. Each package contains a set of object and feature classes and the relationships between those classes. Each object class within a package consists of a descriptive name and a set of attributes (and optionally behaviors) that define that object.
The ArcGIS?Transportation Data Model Packages are:
- Reference Network Package
The Reference Network Package provides the foundation for the ArcGIS? Transportation Data Model. Virtually all other objects related to the Reference Network in some way.Not surprisingly the transportation network is of primary importance to transportation professionals as well. Although not every transportation related application deals directly with the transportation network, it is such a compellingly common element that it is considered to be the core of the ArcGIS?Transportation Data Model.
The Assets Package contains objects that represent physical features on the landscape that are not part of the network, but are related to the network. These may be transportation navigation aids and controls such as traffic lights o
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