http://dl.gi.de/handle/20.500.12116/11570 Thu, 23 Jul 2026 03:11:08 GMT 2026-07-23T03:11:08Z http://dl.gi.de/handle/20.500.12116/11698 Cloud Data Management for Online Games: Potentials and Open Issues Diao, Ziqiang; Schallehn, Eike; Wang, Shuo; Mohammad, Siba The number of players, for massively multiplayer online role-playing games (MMORPG), typically reaches millions of people, geographically distributed throughout the world. Worldwide revenues for these games increase by billions of dollars each year. Unfortunately, their complex architecture makes them hard to maintain, resulting in considerable costs and development risks. For normal operation, MMORPGs have to access huge amounts of diverse data. With increasing numbers of players, managing growing volumes of data in a relational database becomes a big challenge, which cannot be overcome by simply adding new servers. Cloud storage systems are emerging solutions focusing on providing scalability and high performance for Cloud applications, social media, etc. However, Cloud storage systems are in general not designed for processing transactions or providing high levels of consistency. In this paper, we present our current work-in-progress by analyzing the existing architecture of MMORPGs and classifying relevant data. Based on this, we highlight the design requirements, identify the major research challenges, and propose a Cloud-based model for MMORPGs that we currently implement as a testbed for further evaluation. Tue, 01 Jan 2013 00:00:00 GMT http://dl.gi.de/handle/20.500.12116/11698 2013-01-01T00:00:00Z http://dl.gi.de/handle/20.500.12116/11690 Database and Data Management Requirements for Equalization of Contactless Acquired Traces for Forensic Purposes—Provenance and Performance Kirst, Stefan; Schäler, Martin The importance of fingerprints and microtraces within the field of criminalistics and forensics is well-known. An upcoming field is the contactless acquisition of traces, because the integrity of traces is preserved Hildebrandt et al. (MM’Sec, pp. 1–8, 2011). A further issue from such an acquisition method is the potential presence of perspective distortions, which we already started to deal with in Kist et al. (SPIE 8546 Conf., pp. 0A/1–0A/12, 2012). Within the scope of a productive use of contactless acquisition methods, preprocessing steps like the equalization come along. In this paper, we give a perspective on requirements for an underlying database and database management system to support the methods of Kist et al. (SPIE 8546 Conf., pp. 0A/1–0A/12, 2012) as a potential real-case scenario. Thereby, we point out possible starting points for parallelization potential and evaluate the benefit. Finally, we integrate an approach to ensure the chain of custody by means of provenance, which is essential for any forensic investigation and evaluate the effect on the overall system performance. Tue, 01 Jan 2013 00:00:00 GMT http://dl.gi.de/handle/20.500.12116/11690 2013-01-01T00:00:00Z http://dl.gi.de/handle/20.500.12116/11694 Vorstellung des Lehrstuhls für Datenbanksysteme der TUM Kemper, Alfons; Neumann, Thomas Der Lehrstuhl für Datenbanksysteme der Technischen Universität München beschäftigt sich in der Forschung mit der Entwicklung, Optimierung und Anwendung „moderner“ Datenbanktechnologie. Die Schwerpunkte der letzten Jahre lagen in der Entwicklung von Multi-Tenancy-fähigen Datenbanken, eScience-Datenbankanwendungen, Workload-Management für heterogene Anwendungen, RDF-Datenbanken und, insbesondere, Hauptspeicher-Datenbanken für hybride OLTP&OLAP-Anwendungen. Tue, 01 Jan 2013 00:00:00 GMT http://dl.gi.de/handle/20.500.12116/11694 2013-01-01T00:00:00Z http://dl.gi.de/handle/20.500.12116/11692 „Gib mir so viel Gold, wie die Metzger im Nachbardorf zusammen besitzen und ich lasse den Piloten frei!“ – Spielbasiertes Lernen von SQL-Grundlagen Schildgen, Johannes; Deßloch, Stefan Stellen Sie sich vor, Sie landen auf einer einsamen Insel und die Bewohner verstehen nur die Sprache SQL. Das Spiel SQL Island (http://www.sql-island.de) dient zur Vermittlung und Übung von SQL-Grundlagen und wird durch die Eingabe von SQL-Anfragen gesteuert. Der Zweck des Spiels ist es, dem Spieler auf unterhaltsame Weise beizubringen, wie Daten in relationalen Datenbanken abgefragt und manipuliert werden können. Dabei werden keine SQL-Kenntnisse vorausgesetzt. Tue, 01 Jan 2013 00:00:00 GMT http://dl.gi.de/handle/20.500.12116/11692 2013-01-01T00:00:00Z