Geospatial Data Catalogue Service ; Status and Issues

  • Published : 2009.12.31

Abstract

Geospatial interoperability has been pursued by propagating international standards and OGC standards. The NGIC, GeoConnection and other catalogue services are reviewed with aspect to metadata and search functions. Detailed metadata could be driven to users after finding what they want to have. Criteria for search were not fully overlapped with metadata, as simple and typical searches are prevailing. OGC catalogue service standards were made but catalogue services in Korea have been implemented in their own ways, not fully compliance-tested. Different domain technologies have been developed regardless of geospatial service, the relationship and integration methods between catalogue services and other core technologies are reviewed in the form of a pair table. Other issues in geospatial service were discussed in the level of raising issues.

공간정보의 상호운영성을 확보하기 위하여 국제표준 및 개방형지리정보 표준협회에서 만든 표준이 널리 적용되어왔으며, 카탈로그 서비스에 대한 부분 역시 그러하였다. 국가지리정보유통망 서비스와 캐나다의 GeoConnection서비스 및 기타 다양한 공간정보의 카탈로그를 제공하는 서비스 사이트를 분류하고 그곳에서 사용되는 메타데이터 현황을 조사하였다. 실제 필수메타데이터는 잘 준용되고 있으나 메타데이터를 자동으로 추출하는 프로세스 등은 미약하였으며, 검색을 위한 기준과 메타데이터가 100% 일치하지는 않았다. 지적재산권보호기술과 카탈로그의 기술적 통합 등 이슈가 되는 주변기술과의 결합가능성을 테이블을 작성하여 구현 방안을 검토하였다. 서비스 카탈로그에 대한 적합성평가를 받은 국가의 공간정보 카탈로그 서비스는 없었다. 서비스되는 공간정보가 종류가 많고 다양해지고 쌍방향 정보가 되는 과정에서 메타데이터를 사용자가 편하게 이해할 수 있는 표현방법 및 기타 보안관련 사항 등에 대한 논의를 추가하였다.

Keywords

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