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ICDE
2007
IEEE
116views Database» more  ICDE 2007»
16 years 5 months ago
X-Time: Schema Versioning and Cross-Version Querying in Data Warehouses
In this demo we present X-Time, a prototype for managing schema versioning in relational data warehouses, specifically oriented to support the formulation of crossversion queries,...
Stefano Rizzi, Matteo Golfarelli
ICDE
1995
IEEE
112views Database» more  ICDE 1995»
16 years 5 months ago
Optimizing Queries with Materialized Views
While much work has addressed the problem of maintaining materialized views, the important question of optimizing queries in the presence of materialized views has not been resolv...
Surajit Chaudhuri, Ravi Krishnamurthy, Spyros Pota...
ESA
2004
Springer
106views Algorithms» more  ESA 2004»
15 years 7 months ago
Efficient Tradeoff Schemes in Data Structures for Querying Moving Objects
The ability to represent and query continuously moving objects is important in many applications of spatio-temporal database systems. In this paper we develop data structures for ...
Pankaj K. Agarwal, Lars Arge, Jeff Erickson, Hai Y...
FQAS
2006
Springer
90views Database» more  FQAS 2006»
15 years 7 months ago
On Tuning OWA Operators in a Flexible Querying Interface
The use of the Yager's OWA operators within a flexible querying interface is discussed. The key issue is the adaptation of an OWA operator to the specifics of a user's qu...
Slawomir Zadrozny, Janusz Kacprzyk
EDBT
2010
ACM
137views Database» more  EDBT 2010»
15 years 7 months ago
Fine-grained and efficient lineage querying of collection-based workflow provenance
The management and querying of workflow provenance data underpins a collection of activities, including the analysis of workflow results, and the debugging of workflows or service...
Paolo Missier, Norman W. Paton, Khalid Belhajjame