PPT Slide

Harvesting tools

(ROADS, Combine, LDAP Crawler)

Metadata

storage/

management

Metadata Editors

Metadata

extraction

Indexing tools

(ROADS, Zebra)

Metadata Exchange

(IAFA, DC, RDF, Oracle...)

Index data Exchange

(centroids, TIOs, GILS, SOIF,

AltaVista, InfoSeek)

Query interfaces

Vocabulary

Tools

Query

interfaces

Metadata Registry Tools

Gateways

Z39.50-Whois++

Applic-ations

Gateways

Whois++-Z39.50

DESIRE Tools

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