Ph.D. Tezi Görüntüleme

      Geographic Data are used commonly on various application areas from land administration and planning to environment and agriculture. While Geo-Information Systems (GIS) provides a powerful decision support for specific user communities, the focus is now increasingly shifting towards interoperability of these systems. In Turkey, although various GIS projects have been developed by different public institutions and local governments; technical, standard, and policy deficiencies result in time and effort losses on geographic data management. In this context, building Spatial Data Infrastructure (SDI) has the potential for the effective production, collection, and sharing of geographic data at different administrative levels.

      In this study, a harmonized geographic database model titled as National Geographic Data Exchange Model (UVDM) is developed that can be applicable on geographic data management and interoperability. This base model is an object-relational model and the starting point to create sector models. In the Field Work, state-of-play of public institutions that provide/use geographic data was examined and evaluated in view of geographic data sharing. Application-driven geographic data needs were determined to support decision making processes at local, regional, and national levels. Developed Generic Conceptual Model components define rules to harmonize geographic data and to produce data specifications. Application schemas and feature catalogues were produced for UVDM data themes such as Administrative Unit (IB), Address (AD), Cadastre/Building (MB), Topography (TO), Geodesy (JD), Transportation (UL), and Land Cover/Use (AR) with Unified Modeling Language (UML). The UML models were tested and revised with local applications such as management of key register, economic and demographic analysis, and like this. By this way, using geographic data with UVDM contributes local governments and public institutions to manage geographic information corporately. This base model provides noteworthy benefits for the services to citizens, business, and governments and support sustainable management of urban and rural areas.

      Key Words: Spatial Data Infrastructure, Geographic Data Specifications, Geographic Data Exchange Model/Database Model