Abstract. Query reformulation techniques based on semantic knowledge have been used in two ways in database management systems, namely for query optimization and for data integrati...
Nowadays, one of the main research issues of great interest is the efficient tracking of mobile objects that enables the effective answering of spatiotemporal queries. This line o...
Katerina Raptopoulou, Michael Vassilakopoulos, Yan...
: The purpose of the current work is to explore and improve the analysis of event data stored in event repositories, enabling the application of specialized event algebra operators...
Many geographical applications deal with spatial objects that cannot be adequately described by determinate, crisp concepts because of their intrinsically indeterminate and vague n...
Abstract. Distributed crawling has shown that it can overcome important limitations of the centralized crawling paradigm. However, the distributed nature of current distributed cra...
Web caching keeps single Web objects ready somewhere in caches in the user-to-server path, whereas database caching uses fullfledged database management systems as caches to adapt...
In this paper we describe a prototype implementation of updateable views called “SBQL Views”. The prototype follows a novel approach to view updates based on the Stack-Based Ap...
Abstract. Often, XML documents stored in an XML database must be transformed by an XSL processor into a client-specific format before queries are submitted. In applications where X...
The need for Keyword search in databases is suggested both by Web integration with legacy database management system and by dynamic Web publication. However, it sacrifices the inh...
Abstract. Query rewriting method is proposed for the heterogeneous information integration infrastructure formed by the subject mediator environment. Local as View (LAV) approach t...
Leonid A. Kalinichenko, Dmitry O. Martynov, Sergey...