Ludwig-Maximilians-Universität München, Institut für Informatik
Technical Report 93-06
- TITLE:
-
Object-Oriented Modeling of Meta Information for Semantic Schema Enrichment and (Semi-)Automatic Schema Transformation
- DATE:
-
April 1993
- AUTHORS:
- Daniel A. Keim
- Hans-Peter Kriegel
- Andreas Miethsam
- Institut für Informatik
- Universität München
- Leopoldstr. 11B
- D-80802 München (Germany)
- KEYWORDS:
-
interoperability, federated databases, global conceptual schema, schema transformation, schema enrichment, translation of relational operations
- ABSTRACT:
-
In this paper, we describe a framework for an object-oriented modeling
of meta information. The meta information consists of all kind of information
necessary to access and interoperate the participating databases.
As part of the meta information, we model the common properties and
differences of the various data models and concrete systems. We also
include information to semantically enhance the schemas of the partici-
pating databases and provide the basis for an automatization of the
schema transformation process. We describe possibilities to (semi-)
automatically transform flat relational schemas into structured object-
oriented ones which are more adequate to model complex real world
problems. We use the object-oriented data model as target model of the
transformation because of its semantic richness and its availability as
commercial systems. The meta information necessary for the schema
transformation may be user supplied or it may be deduced from an entity-
relationship design schema and corresponding mapping information.
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Robert Stabl
(28.11.1994)