A5022059310- Advanced Database Systems and Queries
- Semantic Web and Ontologies
- Data Management and Algorithms
- Data Quality and Management
- Data Mining Algorithms and Applications
- Open Education and E-Learning
- Distributed systems and fault tolerance
- Digitalization, Law, and Regulation
- Digital Innovation in Industries
- Scientific Computing and Data Management
- Biomedical Text Mining and Ontologies
- Real-Time Systems Scheduling
- Advanced Data Storage Technologies
- Business Process Modeling and Analysis
- Service-Oriented Architecture and Web Services
- Interconnection Networks and Systems
- Wikis in Education and Collaboration
- Digital Transformation in Industry
- Digital Rights Management and Security
- Consumer behavior in food and health
- Computability, Logic, AI Algorithms
- Education Methods and Technologies
- Privacy, Security, and Data Protection
- Advanced Authentication Protocols Security
- Corporate Governance and Management
University of Münster
2006-2019
Multidimensional modeling requires specialized design techniques. Though a lot has been written about how data warehouse should be designed, there is no consensus on method yet. This paper follows from wide discussion that took place in Dagstuhl, during the Perspectives Workshop "Data Warehousing at Crossroads", and aimed outlining some open issues of warehouses. More precisely, regarding conceptual models, logical methods for design, interoperability, new architectures applications are considered.
Views as a means to describe parts of given data collection play an important role in many database applications. In dynamic environments where is updated, not only information provided by views, but also sources yet missing from views turns out be relevant: Previously, this has been characterized terms view complements ; recently, it shown that can exploited the context warehouses guarantee desirable warehouse properties such independence and self-maintainability. As complete source trivial...
Views play an important role as a means to structure information with respect specific users' needs. While read access through views is easy handle, update requests are dificult in the sense that they have be translated into appropriate updates on database relations. In this paper "constant complement translator" approach towards view updating proposed by Bancilhon and Spyratos revisited within realm of SQL databases, novel characterization established showing constant translators exist...
Multidimensional analysis allows decision makers to efficiently and effectively use data tools, which mainly depend on multidimensional (MD) structures of a warehouse such as facts dimension hierarchies explore the information aggregate it at different levels detail in an accurate way. A conceptual model MD serves abstract basis subsequent implementation according one specific technology. However, there is semantic gap between its complicates adequate treatment summarizability issues, turn...
e-learning has become an important topic, both in academia and industry. This paper reports on a newly created Web-based platform, called eXtreme e-Learning eXperience (XLX), to perform exercise work of technically oriented graduate-level university courses, support blended learning. In addition providing course portal with traditional teaching material, e-mail list, discussion forum, XLX's main contribution lies personalized training section that allows transparent access underlying...
Currently documentation processes for routine patient care and clinical research are kept separate (dual source). Due to overlaps between documentation, a single source approach provides opportunities improve efficiency of medical given the large workload physicians related documentation. Organisational, technical regulatory conditions need be considered design systems. We present architecture studies provide results from pilot implementations.
Clinical trials often require large and redundant documentation efforts, because information systems in patient care research are separated. In two clinical we have assessed the number of study items available system for re-use research. We analysed common standards such as HL7, IHE RFD CDISC ODM, regulatory constraints process. Based on this analysis designed implemented an architecture integrated trial workflow. Key aspects existing medical routine data integration into current workflows.
Crowdfunding, a strategy for obtaining financial support project, an event, or start-up company, has become both popular and successful in recent years. However, research on the subject is still scarce. Based data from Kickstarter (US-based) Startnext (Germany-based) projects, insights into current crowdfunding situation at aforementioned platforms are provided this paper. Furthermore, project development over time presented with regard to observable success activity indicators, particular...
Views as a means to describe parts of given data collection play an important role in many database applications. In dynamic environments, where is updated, not only information provided by views, but also sources missing from views turns out be relevant: Previously, this was characterized terms view complements; recently, it shown that complements can exploited the context warehouses guarantee desirable warehouse properties such independence and self-maintainability. As complete source...