Application of Semantic Data Model for Geographical Information System

運用語意資料模式建立地理資訊系統

張克章(Ker-Chang Chang)

《國防管理學報》 13卷1期 (1992/02) Pp. 57-70

https://doi.org/10.29496/JNDM.199202.0006

摘要

本文旨在提出運用語意資料模式建立地理資訊系統的新方法。這方法包括兩個步驟：（1）地理資訊系統的架構層以語意資料模式建立；（2）相對應的實體層則以已商業化的關聯模式建立。故本文亦提出語意資料模式與關聯式資料模式的轉譯器。本文所提方法的優點包括：（1）語意資料模式對資料庫架構層所提供的摘要說明能力比關聯式資料模式強，故實體資料獨立的觀念更加強化；（2）模式轉譯器提供資料庫設計自動化的工具；（3）地理資訊系統的實體層採用關聯式資料模式以配合目前正實際運作中的系統可持續使用。

關鍵字

地理資訊系統 ； 語意資料模式 ； 架構層 ； 實體層 ； 程式轉譯器

並列摘要

This paper proposes a new technique to setup a geographical information system (GIS) using the Semantic Data Model (SDM). The proposed technique consists of the following two steps. First, a GIS is constructed by the semantic data model at the conceptual level; Second, the physical level of the GIS is planted on a commercialized database system of relational data model (RDM). A model translator from SDM to RDM is also designed in this paper. The advantages of the proposed technique are: (1) the semantic data model provides more data abstraction primitives for the conceptual structure of a GIS than are provided by the relational data model; the concept of physical data independence can be enhanced; (2) the proposed model translator provides a valuable software tool for database designer since the problem of model transformation between the SDM and the RDM is solved automatically; (3) the physical layer of GIS using relational data model will accommodate the existing fact that the current operating GIS has to be in use continually.

並列關鍵字

Geographical Information System ； Semantic Data Model ； Conceptual level ； Physical level ； Model translator