Road Data Model Design in the Local Government of Valencia

摘要

This paper shows how the Local Government of Valencia has designed a roads data model. The data model includes specific types of data used with the rules that are needed for automatically controlling the generalization of roads data. A detailed model like the proposed one this paper is a necessary component of an extended DBMS. The extended DBMS is designed to manage real-world meaning in addition to spatial data. The designed conceptual data model is constituted upon the criteria list. During the establishment of the external schema, a progressive approach appropriate to the conceptual data modeling requirements of an entire road administration was reflected on. The data model was designed with four distinct components: geometry, topology, road events and metadata. The existing standards have been followed, in order to make the resulting information interoperable with information from any source.