Large-scale information systems in public utility services depend on computing infrastructure. Many research e?orts are being made in related areas, such as mobile computing, cloud computing, sensor networks, high-level user interfaces and information accesses by Web users. Government agencies in many countries plan to launch facilities in education, health-care and information support as a part of e-government initiative. In this context, information interchange m- agement has become an active research ?eld. A number of new opportunities have evolved in design and modeling based on the new computing needs of the users. Database systems play a centralrole in supporting networkedinformation systems for access and storage management aspects. The 6thinternationalworkshoponDatabasesin NetworkedInformationS- tems (DNIS) 2010 was held during March 29 31, 2010 at University of Aizu in Japan. The workshop program included research contributions and invited c- tributions. A view of research activity in information interchange management and related research issues was provided by the sessions on related topics. The keynoteaddresswascontributedbyDivyakantAgrawal. Theworkshopsessionon NetworkedInformationSystems:Infrastructure had invitedpapersbyHarumi KunoandMaluCastellanos. Thesessionon AccessestoInformationResources had an invited contribution from Joachim Biskup. The following section on Information and Knowledge Management Systems included invited contri- tions from Toyoaki Nishida and Tetsuo Kinoshita. The session on Information Extraction from Data Resources included the invited contribution of Polepalli Krishna Reddy. The section on Geospatial Decision Making comprised c- tributions by Cyrus Shahabi and Yoshiharu Ishikawa. We would like to thank the members of the Program Committee for their support and all authors who contributed to DNIS 2010.

Inhalt
Networked Information Systems: Infrastructure.- Data Management Challenges in Cloud Computing Infrastructures.- Managing Dynamic Mixed Workloads for Operational Business Intelligence.- A Study on Workload Imbalance Issues in Data Intensive Distributed Computing.- Information Extraction, Real-Time Processing and DW2.0 in Operational Business Intelligence.- On Realizing Quick Compensation Transactions in Cloud Computing.- Optimization of Query Processing with Cache Conscious Buffering Operator.- Access to Information Resources.- Usability Confinement of Server Reactions: Maintaining Inference-Proof Client Views by Controlled Interaction Execution.- AccKW: An Efficient Access Control Scheme for Keyword-Based Search over RDBMS.- Information and Knowledge Management Systems.- Social Intelligence Design for Knowledge Circulation.- Agent-Based Active Information Resource and Its Applications.- Semantic Interoperability in Healthcare Information for EHR Databases.- Adaptive Integration of Distributed Semantic Web Data.- Managing Groups and Group Annotations in madcow.- Semantic Network Closure Structures in Dual Translation of Stochastic Languages.- Information Extraction from Data Resources.- VisTree: Generic Decision Tree Inducer and Visualizer.- Semantics Extraction from Social Computing: A Framework of Reputation Analysis on Buzz Marketing Sites.- An Approach to Extract Special Skills to Improve the Performance of Resume Selection.- EcoBroker: An Economic Incentive-Based Brokerage Model for Efficiently Handling Multiple-Item Queries to Improve Data Availability via Replication in Mobile-P2P Networks.- Interface Tailoring by Exploiting Temporality of Attributes for Small Screens.- Geo-spatial Decision Making.- Towards K-Nearest Neighbor Search in Time-Dependent Spatial Network Databases.- Spatial Query Processing Based on Uncertain Location Information.- Skyline Sets Query and Its Extension to Spatio-temporal Databases.- Implementation of Geographic Search Methods for Lunar Objects.