期刊名称：ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
印刷版ISSN：2194-9042
电子版ISSN：2194-9050
出版年度：1998
卷号：XXXII Part 4
出版社：Copernicus Publications
摘要：Integrated access to the many heterogeneous and distributed sources of Geo data is an important precondition in orderto facilitate the investigation of global processes like temporal development of ecosystems. The object orientedpaleoecological information system OPALIS aims to support interoperability of various data sources. While retaining theadvantages of local data maintenance and formats, it will provide uniform access to information by means of integratedqueries and object oriented database views. In this paper, we present the component based architecture of OPALISbeing designed to support extensibility and adaptability to future requirements. Furthermore, we describe the derivationof the relevant Geo domain knowledge used to guide the integration process as well as characterize the query types thatwill be supported in OPALIS.
