Arif Cagdas AYDINOGLU and Tahsin YOMRALIOGLU Some Spatial Data Management Issues towards Building SDI International Workshop on Spatial Information for Sustainable Management of Urban Areas FIG Commission 3 Workshop 2009 Mainz, Germany, 2 – 4 February 2009 1/11 Some Spatial Data Management Issues towards Building SDI Arif Cagdas AYDINOGLU, Wilko QUAK, Tahsin YOMRALIOGLU Key words: SDI, Spatial Data Management/Models SUMMARY Various Urban GIS projects have been produced by different public institutions in Turkey. But, coordination has not been provided among these public institutions that produce and use spatial data. Technical, Standard, and policy deficiencies result in time and effort losses on data production, management, and sharing. Spatial data users need to use the data collaboratively to provide noteworthy benefits to environmental, social, and economic context for sustainable management of urban areas. By this way, Geographic information strategy consistent with European Union INSPIRE and Turkey National GIS actions should be determined. As a preliminary work to build Spatial Data Infrastructure (SDI), before making the data enabled for multiple uses, Generic Conceptual Model components were determined to manage and harmonize spatial data and to produce application schemas of spatial data themes. These components were divided into two sections, Scope / Application Area and Technical Components. Scope / Application Area components include standard hierarchy, scale-resolution, generalization approach, and building province level SDI. Technical Components include principles, reference model, application schema rules, general feature model, spatial object identifier, spatial object versioning, and like this. As a case study, spatial data collected from different sources was managed for many applications from environment and land management to Urban GIS with Trabzon city example. As a result of this, these spatial data management issues were examined with the aim of using and sharing data effectively and clarity some needs for building SDI.