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ICDE
2007
IEEE
113views Database» more  ICDE 2007»
15 years 11 months ago
Reducing Order Enforcement Cost in Complex Query Plans
Algorithms that exploit sort orders are widely used to implement joins, grouping, duplicate elimination and other set operations. Query optimizers traditionally deal with sort ord...
Ravindra Guravannavar, S. Sudarshan
VLDB
2004
ACM
92views Database» more  VLDB 2004»
15 years 3 months ago
Write-Optimized B-Trees
Large writes are beneficial both on individual disks and on disk arrays, e.g., RAID-5. The presented design enables large writes of internal B-tree nodes and leaves. It supports b...
Goetz Graefe
NDQA
2003
156views Education» more  NDQA 2003»
14 years 11 months ago
Toward a Question Answering Roadmap
Growth in government investment, academic research, and commercial question answering (QA) systems is motivating a need for increased planning and coordination. The internationali...
Mark T. Maybury
SIGMOD
2003
ACM
163views Database» more  SIGMOD 2003»
15 years 10 months ago
Multi-Dimensional Clustering: A New Data Layout Scheme in DB2
We describe the design and implementation of a new data layout scheme, called multi-dimensional clustering, in DB2 Universal Database Version 8. Many applications, e.g., OLAP and ...
Sriram Padmanabhan, Bishwaranjan Bhattacharjee, Ti...
DIMVA
2006
14 years 11 months ago
Digital Forensic Reconstruction and the Virtual Security Testbed ViSe
This paper presents ViSe, a virtual security testbed, and demonstrates how it can be used to efficiently study computer attacks and suspect tools as part of a computer crime recons...
André Årnes, Paul Haas, Giovanni Vign...