Download Advanced Information Systems Engineering: 15th International by Marek Rusinkiewicz (auth.), Johann Eder, Michele Missikoff PDF

By Marek Rusinkiewicz (auth.), Johann Eder, Michele Missikoff (eds.)

This booklet constitutes the refereed court cases of the fifteenth foreign convention on complicated info platforms Engineering, CaiSE 2003, held in Klagenfurt, Austria in June 2003.

The forty five revised complete papers provided including three invited contributions have been rigorously reviewed and chosen from 219 submissions. The papers are geared up in topical sections on XML, tools and types for info platforms, UML, net enterprise and social modeling, peer-to-peer structures, ontology-based tools, complex layout of data platforms, wisdom, wisdom administration, net companies, information warehouses, digital agreements and workflow, requisites engineering, metrics and procedure engineering, and agent applied sciences and complicated environments.

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Additional resources for Advanced Information Systems Engineering: 15th International Conference, CAiSE 2003 Klagenfurt/Velden, Austria, June 16–20, 2003 Proceedings

Example text

3 Extent Join In this section, we discuss the XML element extent concept and the extent join algorithm. We present some indexes as well in this section to support the concept and the algorithm. 1 XML Element Extent Given an XML data tree Td = (Vd , Ed , δd , Σd , rootd , oid) and a corresponding XML schema graph Gt = (Vt , Et , δt , Σt , roott ), we have the following definitions. Definition 3. pcpair(pid, cid) is a pair of oids, in which pid, cid ∈ oid and pid is the parent of cid, for example, pcpair(&1, &2).

Finally, we note that in contrast to [19], in the present paper we assume that XML documents do not have missing information and leave the problem of how to extend the approach to the case of missing information for future research. The rest of this paper is organised as follows. Section 2 contains some preliminary definitions. Section 3 contains the definition of an XMVD. In Section 4 we define a 4NF for XML and prove that it eliminates redundancy. Finally, Section 5 contains some concluding comments.

W. Vincent and J. Liu. The implication problem for unary functional dependencies in xml. Submitted for publication, 2002. 19. W. Vincent and J. Liu. Strong functional dependencies and a redundancy free normal form for xml. Submitted for publication, 2002. 20. W. Vincent and J. Liu. Functional dependencies for xml. In Fifth Asian Pacific Web Conference, 2003. 21. W. Vincent and J. Liu. Multivalued dependencies for xml. In 20th BNCOD Conference, 2003. 22. J. Widom. Data management for xml - research directions.

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