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Fundamentals of Database Systems, 5th Edition
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The article was published on 2006-03-17 and is currently open access. It has received 512 citations till now.read more
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Journal ArticleDOI
A Survey of Web Information Extraction Systems
TL;DR: This paper surveys the major Web data extraction approaches and compares them in three dimensions: the task domain, the automation degree, and the techniques used and believes these criteria provide qualitatively measures to evaluate various IE approaches.
Book ChapterDOI
A native and adaptive approach for unified processing of linked streams and linked data
TL;DR: This paper presents CQELS (Continuous Query Evaluation over Linked Streams), a native and adaptive query processor for unified query processing over linked Stream Data and Linked Data, and demonstrates the efficiency of this approach.
Proceedings ArticleDOI
Multi-tenant databases for software as a service: schema-mapping techniques
TL;DR: A new schema-mapping technique for multi-tenancy called Chunk Folding is described, where the logical tables are vertically partitioned into chunks that are folded together into different physical multi-Tenant tables and joined as needed.
Proceedings Article
An Intelligent SQL Tutor on the Web
TL;DR: The results of three evaluation studies with the University of Canterbury students taking database courses show that SQLT-Web is an effective system, and the system's architecture is described in comparison to the architectures of other existing Web-enabled tutors.
Proceedings ArticleDOI
Implementing distribution and persistence aspects with aspectJ
TL;DR: This paper reports the experience of using AspectJ, a general-purpose aspect-oriented extension to Java, to implement distribution and persistence aspects in a web-based information system and proposes architecture-specific guidelines that provide practical advice for both restructuring and implementing certain kinds of persistent and distributed applications with Aspect