Abstract. This paper describes the new e-learning tool CHESt that allows students to search in a knowledge base for short (teaching) multimedia clips by using a semantic search eng...
XQuery, the standard query language for XML, is gaining popularity among users with a SQL background; indeed, formulating XQuery and SQL queries requires comparable skills. Howeve...
Empowering users to access databases using simple keywords can relieve the users from the steep learning curve of mastering a structured query language and understanding complex a...
Object persistence architectures support transparent access to persistent objects. For efficiency, many of these architectures support queries that can prefetch associated objects ...
Versioned textual collections are collections that retain multiple versions of a document as it evolves over time. Important large-scale examples are Wikipedia and the web collect...