The state-of-the-art digital geologic mapping in Korea towards UML-based data modeling approach

In Korea, national digital geologic mapping has been carried out since the late 1990s. This approach is a part of so-called NGIS (National GIS) of Korea, and geologically mappable database information is one of nation-covering thematic mapping. Several further researches after the first year project for Korean digital geologic mapping will be followed. Especially, to provide basic information from a variety of sources in a consistent, applicable, and searchable structure, digital data modeling approach is needed. Among geo-data modeling approach, the data modeling in UML can provide: sufficient semantics and notation to address a wide variety of contemporary modeling issues, extensibility mechanisms for the future modeling approaches. In this paper, first, we introduce general review of the state-of-the-art Korea national digital geologic mapping and concepts of geo-data model with data modeling aspects are addressed, and then case histories for geo-data modeling and several approaches for data modeling in GIS application fields are discussed. Lastly, tentative conceptual geologic data modeling by using UML(Unified Modeling Language) of OO(Object-oriented) concepts is attempted. Through this approach, the main benefits for standardization and implementation lineage with conceptual model in consideration to reusability are expected.