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SIGMOD
2011
ACM
198views Database» more  SIGMOD 2011»
7 years 10 months ago
U-MAP: a system for usage-based schema matching and mapping
This demo shows how usage information buried in query logs can play a central role in data integration and data exchange. More specifically, our system U-Map uses query logs to g...
Hazem Elmeleegy, Jaewoo Lee, El Kindi Rezig, Moura...
SIGMOD
2011
ACM
169views Database» more  SIGMOD 2011»
7 years 10 months ago
Leveraging query logs for schema mapping generation in U-MAP
In this paper, we introduce U-MAP, a new system for schema mapping generation. U-MAP builds upon and extends existing schema mapping techniques. However, it mitigates some key pro...
Hazem Elmeleegy, Ahmed K. Elmagarmid, Jaewoo Lee
SIGMOD
2011
ACM
249views Database» more  SIGMOD 2011»
7 years 10 months ago
ProApproX: a lightweight approximation query processor over probabilistic trees
We demonstrate a system for querying probabilistic XML documents with simple XPath queries. A user chooses between a variety of query answering techniques, both exact and approxim...
Pierre Senellart, Asma Souihli
SIGMOD
2011
ACM
221views Database» more  SIGMOD 2011»
7 years 10 months ago
Scalable query rewriting: a graph-based approach
In this paper we consider the problem of answering queries using views, which is important for data integration, query optimization, and data warehouses. We consider its simplest ...
George Konstantinidis, José Luis Ambite
PODS
2011
ACM
201views Database» more  PODS 2011»
7 years 10 months ago
Data exchange beyond complete data
In the traditional data exchange setting, source instances are restricted to be complete in the sense that every fact is either true or false in these instances. Although natural ...
Marcelo Arenas, Jorge Pérez, Juan L. Reutte...
IJCIS
1998
78views more  IJCIS 1998»
8 years 7 months ago
Merging Databases Under Constraints
The problem of integrating information from con icting sources comes up in many current applications, such as cooperative information systems, heterogeneous databases, and multi-a...
Jinxin Lin, Alberto O. Mendelzon
KDD
1995
ACM
227views Data Mining» more  KDD 1995»
8 years 10 months ago
Applying a Data Miner To Heterogeneous Schema Integration
Anapplication of data miningtechniques to heterogeneous database schemaintegration is introduced. We use attribute-oriented induction to minefor characteristic and classification ...
Son Dao, Brad Perry
VLDB
1994
ACM
127views Database» more  VLDB 1994»
8 years 11 months ago
Semantic Integration in Heterogeneous Databases Using Neural Networks
One important step in integrating heterogeneous databases is matching equivalent attributes: Determining which fields in two databasesrefer to the samedata. The meaning of informa...
Wen-Syan Li, Chris Clifton
LSGRID
2004
Springer
9 years 19 days ago
Heterogeneous Database Federation Using Grid Technology for Drug Discovery Process
The rapid progress of biotechnology provides an increasing number of life science databases. These databases have been operated and managed individually on the Internet. Under such...
Yukako Tohsato, Takahiro Kosaka, Susumu Date, Shin...
SAC
2006
ACM
9 years 1 months ago
Ontology-based integration for relational databases
In this paper, we show that representation and reasoning techniques used in traditional knowledge engineering and the emerging Semantic Web can play an important role for heteroge...
Dejing Dou, Paea LePendu
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