Question answering (QA) systems take users’ natural language questions and retrieve relevant answers from large repositories of free texts. Despite recent progress in QA researc...
There are principal differences between the relational model and XML's tree model. This causes problems in all cases where information from these two worlds has to be brought...
In this paper we explore database segmentation in the context of a column-store DBMS targeted at a scientific database. We present a novel hardware- and scheme-oblivious segmentati...
Integrity constraints are valuable tools for enforcing consistency of data in a database. Global integrity constraints ensure integrity and consistency of data spanning multiple d...
The Oracle relational database management system, with object-oriented extensions and numerous applicationdriven enhancements, plays a critical role worldwide in managing the expl...