Elisabeth Kapsammer,
"Metadata-Based Middleware for Integrating Information Systems"
, 4-1999, Elisabeth Kapsammer: Metadata-Based Middleware for Integrating Information Systems, Dissertation Universität Linz 1999, 133 Blatt
Original Titel:
Metadata-Based Middleware for Integrating Information Systems
Sprache des Titels:
Englisch
Original Kurzfassung:
Today, information systems are widely employed for administrating
large amounts of data of various application areas. Due to
historical, organizational and technical reasons their infrastructure
is usually characterized by the keywords distribution
and heterogeneity. To enable cooperation among distributed and
heterogeneous system components and to ensure one common access,
it is frequently required to achieve interoperability and to further
integrate them logically. However, distribution and
heterogeneity represent major barriers against achieving these goals.
This thesis presents 3 systems realizing middleware to overcome these
barriers. COMan integrates an object-oriented application and
a relational database, IRO-DB focuses on the integration of arbitrary
relational as well as oo. database systems and OASIS deals with the
integration of various security concepts at an
abstract description level.
All these systems achieve logical integration. They provide
transparency with respect to distribution and heterogeneity while
preserving the autonomy of the system components being integrated
as far as possible. To allow for a flexible and generic integration
all systems realize a metadata-based approach. This metadata-based
approach prevents the hard-coding and distribution of the
transformation knowledge, required due to distribution and
heterogeneity aspects, over various system components. Rather, it is
centralized in a reified way within a repository, thus, resulting in
a system able to perform the essential transformations automatically
and open to adapt to changing requirements.
Based on the experience gained by developing these 3 systems, a
criteria catalogue is developed allowing to categorize and evaluate
different kinds of metadata-based middleware.
Sprache der Kurzfassung:
Englisch
Erscheinungsmonat:
4
Erscheinungsjahr:
1999
Notiz zum Zitat:
Elisabeth Kapsammer: Metadata-Based Middleware for Integrating Information Systems, Dissertation Universität Linz 1999, 133 Blatt
Forschungs-