Database Systems for Advanced Applications: DASFAA 2009 by Michal Krátký, Irena Mlynkova, Eric Pardede (auth.), Lei

By Michal Krátký, Irena Mlynkova, Eric Pardede (auth.), Lei Chen, Chengfei Liu, Qing Liu, Ke Deng (eds.)

DASFAA is an annual overseas database convention, situated within the Asia- Paci?cregion,whichshowcasesstate-of-the-artR & Dactivities in databases- tems and their functions. It offers a discussion board for technical shows and discussions between database researchers, builders and clients from academia, enterprise and undefined. DASFAA 2009, the 14th within the sequence, used to be held in the course of April 20-23, 2009 in Brisbane, Australia. during this 12 months, we conscientiously chosen six workshops, each one concentrating on speci?c examine matters that give a contribution to the most subject matters of the DASFAA convention. Thisvolumecontainsthe?nalversionsofpapersacceptedforthesesixworkshops that have been held along with DASFAA 2009. they're: – First overseas Workshop on Benchmarking of XML and Semantic internet purposes (BenchmarX 2009) – moment overseas Workshop on coping with info caliber in Collaborative info structures (MCIS 2009) – First foreign Workshop on facts and procedure Provenance (WDPP 2009) – First foreign Workshop on Privacy-Preserving information research (PPDA 2009) – FirstInternationalWorkshoponMobileBusinessCollaboration(MBC2009) – DASFAA 2009 PhD Workshop all of the workshops have been chosen through a public call-for-proposals approach. The workshop organizers placed an immense volume of e?ort into soliciting and - lecting papers with a stability of top quality, new rules and new purposes. We requested all workshops to stick with a inflexible paper choice technique, together with the technique to make sure that any application Committee participants are excluded from the paper assessment technique of any paper they're concerned with. a demand concerning the total paper recognition fee of not more than 50% used to be additionally imposed on the entire workshops.

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Extra info for Database Systems for Advanced Applications: DASFAA 2009 International Workshops: BenchmarX, MCIS, WDPP, PPDA, MBC, PhD, Brisbane, Australia, April 20 - 23, 2009

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It is possible to minimize this issue using SSD with 83× lower random seek time. The inefficiency of TJFast is highlighted in the case of main memory run (Figures 4(a) and 5(a)) where TJFast fails even in the comparison with TwigStack, because TJFast performs the time consuming labeled path extraction and string matching operations. 8 R. Baˇca and M. 0 TB1 TB2 TB3 TB4 TB5 TB6 XM1 XM2 XM3 XM4 XM5 XM6 Avg. Avg. 0 18 TB1 TB2 TB3 TB4 TB5 TB6 XM1 XM2 XM3 XM4 XM5 XM6 Avg. Avg. 85 3 TwigStack iTwigJoin+PPS TJFast TJDewey 0 0 1 5 2 Time [s] 4 Time [s] 5 TwigStack iTwigJoin+PPS TJFast TJDewey 10 15 20 25 30 6 (b) Processing time (HDD) TB1 TB2 TB3 TB4 TB5 TB6 XM1 XM2 XM3 XM4 XM5 XM6 Avg.

The depth is the total number of levels. In the figure, some nodes at the leaf level are magic. Root A B C A B … C … B CMagic Number of root children A Bushiness … … C Depth Magic Fig. 1. XML Document Generator Data Model The following list gives a detailed description of the eleven control factors in the XML document generator. 1) Number of root children — The number of root children controls the number of sub-trees under the root element node. A tree with only a few root children will have only a few nodes in level one, and by extension only a few nodes in the top few levels.

It is also a native XML database using XPath as its query language. Xindice also implements the XML:DB API. 0. o COR – COR is the name of a leading commercial database with extensions to support XML by shredding a document into a back-end object-relational database. Due to a licensing agreement for the commercial system, we cannot disclose the actual names of the system, so we will just refer to it as COR. Generally, we collect three performance metrics for each benchmark. But inmemory and database packages need to be measured differently due to the differences in their architectures.

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