DHPC Technical Report DHPC-050
Interfacing to Distributed Active Data Archives
K.A. Hawick and P.D. Coddington
Archived: 31 August 1998
Published in Future Generation Computer Systems 16, 73
(1999).
Abstract
The general problem of managing large data archives or libraries of
digital data is particularly challenging when the system must cope
with active data which is processed on-demand. Conventional data
archives are designed so that data is ingested into the system, and
retrieved by users to satisfy particular requests. An active data
archive can be defined as one where much of the data is generated
on-demand, as value-added data products or services, derived from
existing data holdings. Interfacing users and applications to such an
archive system requires a more complex infrastructure than
conventional or passive archive systems. We describe two archive
systems we have built for providing web-based access to satellite and
geospatial imagery as well as to medical imagery such as that from the
visible human datasets. We contrast the requirements and features of
these archives and discuss the Java and CORBA software infrastructure
that we have developed to interface to them. We also describe our
integration of commercial products such as StudioCentral and Informix
with our software and some of the geospatail standard interface
definitions such as GIAS and OpenGIS.
Keywords: digital library; active data; on-line archive; data
services, geospatial imagery; visible human data.
PDF version
PostScript version (gzip compressed)
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