Sciweavers

VLDB
1997
ACM
132views Database» more  VLDB 1997»
13 years 9 months ago
A Foundation for Multi-dimensional Databases
We present a multi-dimensional database model, which we believe can serve as a conceptual model for On-Line Analytical Processing (OLAP)-based applications. Apart from providing t...
Marc Gyssens, Laks V. S. Lakshmanan
VLDB
1997
ACM
80views Database» more  VLDB 1997»
13 years 9 months ago
Merging Ranks from Heterogeneous Internet Sources
Many sources on the Internet and elsewhere rank the objects in query results according to how well these objects match the original query. For example, a real-estate agent might r...
Luis Gravano, Hector Garcia-Molina
VLDB
1997
ACM
140views Database» more  VLDB 1997»
13 years 9 months ago
Parallel Query Scheduling and Optimization with Time- and Space-Shared Resources
Scheduling query execution plans is a particularly complex problem in hierarchical parallel systems, where each site consists of a collection of local time-shared (e.g., CPU(s) or...
Minos N. Garofalakis, Yannis E. Ioannidis
VLDB
1997
ACM
165views Database» more  VLDB 1997»
13 years 9 months ago
DataGuides: Enabling Query Formulation and Optimization in Semistructured Databases
In semistructured databases there is no schema fixed in advance. To provide the benefits of a schema in such environments, we introduce DataGuides: concise and accurate structural...
Roy Goldman, Jennifer Widom
VLDB
1997
ACM
86views Database» more  VLDB 1997»
13 years 9 months ago
Fast Incremental Maintenance of Approximate Histograms
Phillip B. Gibbons, Yossi Matias, Viswanath Poosal...
VLDB
1997
ACM
86views Database» more  VLDB 1997»
13 years 9 months ago
Using Probabilistic Information in Data Integration
The goal of a mediator system is to provide users a uniform interface to the multitude of information sources. To translate user queries, given in a mediated schema, to queries on...
Daniela Florescu, Daphne Koller, Alon Y. Levy
VLDB
1997
ACM
99views Database» more  VLDB 1997»
13 years 9 months ago
Resource Scheduling in Enhanced Pay-Per-View Continuous Media Databases
The enhanced pay-per-view (EPPV) model for providing continuous-media-on-demand(CMOD) services associates with each continuous media clip a display frequency that dependson the cl...
Minos N. Garofalakis, Banu Özden, Abraham Sil...
VLDB
1997
ACM
78views Database» more  VLDB 1997»
13 years 9 months ago
Recovering Information from Summary Data
Data is often stored in summarized form, as a histogram of aggregates (COUNTs, SUMs, or AVeraGes) over speci ed ranges. We study how to estimate the original detail data from the ...
Christos Faloutsos, H. V. Jagadish, Nikolaos Sidir...
VLDB
1997
ACM
117views Database» more  VLDB 1997»
13 years 9 months ago
Finding Data in the Neighborhood
In this paper, we present and evaluate alternative techniques to effect the use of location-independent identiļ¬ers in distributed database systems. Location-independent identiļ¬...
André Eickler, Alfons Kemper, Donald Kossma...
VLDB
1997
ACM
132views Database» more  VLDB 1997»
13 years 9 months ago
Integrating SQL Databases with Content-Specific Search Engines
In recentyears,databaseresearchandproduct developmentactivities havefocusedonsupport for non-traditional data types, such astext or multi-media documents.This paper describes an a...
Stefan Deßloch, Nelson Mendonça Matto...