Advances in Databases and Information Systems: 9th East by Theo Härder (auth.), Johann Eder, Hele-Mai Haav, Ahto Kalja,

By Theo Härder (auth.), Johann Eder, Hele-Mai Haav, Ahto Kalja, Jaan Penjam (eds.)

The ninth East-European convention on Advances in Databases and knowledge platforms used to be hung on September 12–15, 2005, in Tallinn, Estonia. It was once equipped in a cooperation among the Institute of Cybernetics at Tallinn collage of know-how, the dep. of machine Engineering of Tallinn collage of know-how, and the Moscow bankruptcy of ACM SIGMOD. the most aim of the ADBIS sequence of meetings is to supply a - rum for the disseminationof very good researchaccomplishmentsand to advertise interplay and collaboration among the Database and data structures examine groups from relevant and East ecu international locations and the remainder of the area. The ADBIS meetings supply a world platform for the presentationofresearchondatabasetheory,thedevelopmentofadvancedDBMS applied sciences, and their complex purposes particularly in info s- tems. The 2005 convention persisted the ADBIS meetings held in St. Pete- burg (1997), Poznan (1998), Maribor (1999), Prague (2000), Vilnius (2001), Bratislava (2002), Dresden (2003), and Budapest (2004). The convention c- sisted of standard periods with technical contributions reviewed and chosen by way of a global application Committee, in addition to of invited talks and tutorials given via major scientists. For the ?rst time the ADBIS meetings had a satellite tv for pc occasion, a workshop on facts mining and data discovery. The ADMKD 2005 workshop,with its personal overseas ProgramCommittee in addition to complaints, servedas a discussion board toencourageresearchersandpractitionerstodiscussandinvestigatedatamining study and implementation concerns, and to percentage event in constructing and deploying information mining systems.

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Extra info for Advances in Databases and Information Systems: 9th East European Conference, ADBIS 2005, Tallinn, Estonia, September 12-15, 2005. Proceedings

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Pieciukiewicz, K. Stencel, and K. Subieta When compared with transitive closures, fixpoint systems seem to be more readable, as decomposition of the problem is easier. 5 Recursive Procedures and Views in SBQL SBQL philosophy allows for seamless integration of imperative language constructs, including recursive procedures and functions with query operators. This allows utilizing the most popular recursive processing technique, without sacrificing any of the benefits of query language. In contrast to popular programming languages the new quality of SBQL concerns types of parameters and types of functions output.

Vk ) ∈ I ∗ (Eb ) ∧ u0 = I(∧)(v0 , w0 ) > 0}. Only tuples that originate from both expressions Ea and Eb are retained. Their similarity values are combined by t-norm. → • Weighted intersection (Ea ∩ θ Eb ) : → I ∗ ((Ea ∩ θ Eb )) = {(u0 , v1 , . . , vk )|(v0 , v1 , . . , vk ) ∈ I ∗ (Ea ) ∧ (w0 , v1 , . . , vk ) ∈ I ∗ (Eb ) ∧ u0 > 0}∪ {(u0 , v1 , . . , vk )|(w0 , v1 , . . (v0 , v1 , . . , vk ) ∈ / I ∗ (Ea ) ∧ u0 > 0} where u0 is determined by: → I( ∧ θ )(I(θ), v0 , w0 ) case 1 u0 = . → I( ∧ θ )(I(θ), 0, w0 ) case 2 Relation-Collapse: An Optimisation Technique 35 ← The semantics of (Ea ∩ θ Eb ) is given analogously.

New database applications often deal with non-classical media types, such as for images, videos and audio data. These extensions to database systems also demand new query system mechanisms. For example, classical Boolean comparison operators of relational query languages (<, >, =, . . ) are insufficient for image retrieval query formulation. Rather, new operators are needed which determine the similarity of an object to a given one. , similarity between images can be based on comparing the dominating colours, and songs or music can be compared on containing the same melody.

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