An implementation of a directory, plus a guide and/or inventories, integrated with user support mechanisms that provide data access and answers to inquires. Capabilities may include browsing, data searches, and placing and taking orders. A specific implementation of a catalog service. (Source: Earth Science and Applications Data System, Interagency Working Group on Data Management for Global Change, European Patent Organisation).
Published in Chapter:
Geospatial Image Metadata Catalog Services
Yuqi Bai (George Mason University, USA),
Liping Di (George Mason University, USA), Aijun Chen (George Mason University, USA), Yang Liu (George Mason University, USA), and Yaxing Wei (George Mason University, USA)
Copyright: © 2009
|Pages: 7
DOI: 10.4018/978-1-59140-995-3.ch022
Abstract
Three public geospatial image catalog services, FGDC Clearinghouse, NASA ECHO and GMU CSISS CSW, were reviewed, considering the following aspects: metadata generation, metadata ingestion, catalog service conceptual schema, query protocols and system distribution. This review results show how it is becoming possible to query metadata holdings through public, standard Web-based query interfaces. It also show that the catalog service providers still must define a catalog service schema that meets their particular needs.