| Vol-1020 urn:nbn:de:0074-1020-6 Copyright © 2013 for the individual papers by the papers' authors. Copying permitted only for private and academic purposes. This volume is published and copyrighted by its editors.

# GvD 2013
Grundlagen von Datenbanken 2013

### Proceedings of the 25th GI-Workshop "Grundlagen von Datenbanken 2013"

### Ilmenau, Germany, May 28 - 31, 2013.

Edited by

### Kai-Uwe Sattler *
Stephan Baumann *
Felix Beier *
Heiko Betz *
Francis Gropengießer *
Stefan Hagedorn *

* Technische Universität Ilmenau, Fakultät für Informatik und Automatisierung, Databases and Information Systems Group, 98693 Ilmenau, Germany

## Table of Contents

- Full Proceedings (89 pages)
- Preface

### Keynotes

1. WattDB - a Rocky Road to Energy Proportionality (invited talk) 1-2
   Theo Härder
2. Optimizing database architecture for machine architecture: is there still hope? (invited talk) 3
   Peter Boncz

### Workshop Entries

1. Adaptive Prejoin Approach for Performance Optimization in MapReduce-based Warehouses 5-9
   Weiping Qu, Michael Rappold, Stefan Dessloch
2. Ein Cloud-basiertes räumliches Decision Support System für die Herausforderungen der Energiewende 10-15
   Golo Klossek, Stefanie Scherzinger, Michael Sterner
3. Consistency Models for Cloud-based Online Games: the Storage System's Perspective 16-21
   Ziqiang Diao
4. Analysis of DDoS Detection Systems 22-27
   Michael Singhof
5. A Conceptual Model for the XML Schema Evolution 28-33
   Thomas Nösinger, Meike Klettke, Andreas Heuer
6. Semantic Enrichment of Ontology Mappings: Detecting Relation Types and Complex Correspondences 34-39
   Patrick Arnold
7. Extraktion und Anreicherung von Merkmalshierarchien durch Analyse unstrukturierter Produktrezensionen 40-45
   Robin Küppers
8. Ein Verfahren zur Beschleunigung eines neuronalen Netzes für die Verwendung im Image Retrieval 46-51
   Daniel Braun
9. Auffinden von Spaltenkorrelationen mithilfe proaktiver und reaktiver Verfahren 52-57
   Katharina Büchse
10. MVAL: Addressing the Insider Threat by Valuation-based Query Processing 58-63
    Stefan Barthel, Eike Schallehn
11. TrIMPI: A Data Structure for Efficient Pattern Matching on Moving Objects 64-68
    Tsvetelin Polomski, Hans-Joachim Klein
12. Complex Event Processing in Wireless Sensor Networks 69-74
    Omran Saleh
13. XQuery processing over NoSQL stores 75-80
    Henrique Valer, Caetano Sauer, Theo Härder

2013-08-15: submitted by Heiko Betz
2013-08-16: published on CEUR-WS.org