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Persistent URL http://purl.org/net/epubs/work/32885
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Record Id 32885
Title Architecture of a hierarchical classification system
Contributors
Abstract CCLRC is involved in the development of grid and data management tools for a number of e-Science projects in the UK such as the Natural Environment Research Council (NERC) funded "Environment from the Molecular Level" [1]. During the first years of the projects we have developed applications or modified existing applications for managing data files, data discovery and annotation of data with metadata. These applications help the scientists to manage their data files and provide a number of web interfaces to classify their data using topics and annotate using metadata. Metadata includes details of the person who created the data, programs and facilities used and the location of associated data files e.g. input and output files from a computational calculation. One of our major software products, the CCLRC Data Portal [2], employs Web Service technology extensively. Users search across multiple facilities for data they are interested in, by selecting a topic from a hierarchical classification system. The user may then elect to download the data or transfer it to another machine. The Data Portal is deployed on a number of UK escience projects. The facilities each have their own relational database that holds metadata. The metadata contains provenance information i.e. the who, why, where of a particular study as well as links to associated data files held elsewhere. Each study is assigned one or more topics and contains a number of datasets i.e. a directory of files. The Data Portal has a web interface that wraps a number of web services encompassing the core functionality. The web services may also be called directly to make use of all or some of the Data Portal functionality. The data itself is stored on a number of repositories that are managed by SDSC's Storage Resource Broker (SRB) [3].
Organisation CCLRC , ESC , ESC-DMG , ESC-DBS
Keywords data , database , metadata , grid , web services , portal
Funding Information
Related Research Object(s):
Language English (EN)
Type Details URI(s) Local file(s) Year
Presentation Presented at Global Grid Forum 11, Hawaii (GGF 11). GGF11 Web Services.ppt 2004
Paper In Conference Proceedings In The Eleventh Global Grid Forum - Building Service Based Grids Workshop (GGF11), Honolulu, Hawaii, USA, 6-10 Jun 2004, (2004). service-based_0.2.doc 2004
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