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DOLAP
2010
ACM
14 years 7 months ago
Towards OLAP query reformulation in peer-to-peer data warehousing
Inter-business collaborative contexts prefigure a distributed scenario where companies organize and coordinate themselves to develop common and shared opportunities. Traditional b...
Matteo Golfarelli, Federica Mandreoli, Wilma Penzo...
DCC
2000
IEEE
15 years 2 months ago
Summary Structures for Frequency Queries on Large Transaction Sets
As large-scale databases become commonplace, there has been signi cant interest in mining them for commercial purposes. One of the basic tasks that underlies many of these mining ...
Dow-Yung Yang, Akshay Johar, Ananth Grama, Wojciec...
SEMCO
2009
IEEE
15 years 4 months ago
An Algebraic Language for Semantic Data Integration on the Hidden Web
Semantic integration in the hidden Web is an emerging area of research where traditional assumptions do not always hold. Frequent changes, conflicts and the sheer size of the hid...
Shazzad Hosain, Hasan M. Jamil
ICDE
2010
IEEE
177views Database» more  ICDE 2010»
15 years 4 months ago
Optimal load shedding with aggregates and mining queries
— To cope with bursty arrivals of high-volume data, a DSMS has to shed load while minimizing the degradation of Quality of Service (QoS). In this paper, we show that this problem...
Barzan Mozafari, Carlo Zaniolo
RR
2010
Springer
14 years 8 months ago
Query-Based Access Control for Ontologies
Role-based access control is a standard mechanism in information systems. Based on the role a user has, certain information is kept from the user even if requested. For ontologies ...
Martin Knechtel, Heiner Stuckenschmidt