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An OODBMS-IRS Coupling for Structured Documents Marc Volz, Karl Aberer, and Klemens Bohm

Summary: An OODBMS-IRS Coupling for Structured Documents
Marc Volz, Karl Aberer, and Klemens Bohm
GMD-IPSI, Dolivostra e 15,
64293 Darmstadt, Germany,
fvolz, aberer, kboehmg@darmstadt.gmd.de
Requirements of modern Hypermedia Document Systems include support for structured docu-
ments and full DBMS and IRS functionality.1 An objective of DBMSs is to store and facilitate
updates of highly structured and typed data. In conventional IRSs, however, documents are
perceived as at. Uncertainty, on the other hand, is a principal notion in the IRS context. In
order to combine the advantages of both DBMSs and IRSs we have coupled the IRS INQUERY
with the OODBMS VODAK. To model document structure, we have chosen SGML. SGML doc-
uments are stored in the OODBMS, and additional full text indexing is done by the IRS. The
coupling consists of OODBMS classes encapsulating the IRS functionality. As SGML elements
are modeled by database objects in an object oriented framework, queries can be modeled by
means of methods|including content based queries.
1 Introduction
Due to the proliferation of information highways and digital libraries, administering very large hyper-
media document bases is becoming more and more important. Existing systems do not yet provide all
the functionality needed by the information systems of the future. As an example, consider the Mul-


Source: Aberer, Karl - Faculté Informatique et Communications, Ecole Polytechnique Fédérale de Lausanne


Collections: Computer Technologies and Information Sciences