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SIGMOD
2000
ACM
161views Database» more  SIGMOD 2000»
13 years 12 months ago
Answering Complex SQL Queries Using Automatic Summary Tables
We investigate the problem of using materialized views to answer SQL queries. We focus on modern decision-support queries, which involve joins, arithmetic operations and other (po...
Markos Zaharioudakis, Roberta Cochrane, George Lap...
ICDE
2008
IEEE
127views Database» more  ICDE 2008»
14 years 9 months ago
Querying Data under Access Limitations
Data sources on the web are often accessible through web interfaces that present them as relational tables, but require certain attributes to be mandatorily selected, e.g., via a w...
Andrea Calì, Davide Martinenghi
CIDR
2009
141views Algorithms» more  CIDR 2009»
13 years 8 months ago
Sailing the Information Ocean with Awareness of Currents: Discovery and Application of Source Dependence
The Web has enabled the availability of a huge amount of useful information, but has also eased the ability to spread false information and rumors across multiple sources, making ...
Laure Berti-Equille, Anish Das Sarma, Xin Dong, Am...
WWW
2007
ACM
14 years 8 months ago
Web object retrieval
The primary function of current Web search engines is essentially relevance ranking at the document level. However, myriad structured information about real-world objects is embed...
Zaiqing Nie, Yunxiao Ma, Shuming Shi, Ji-Rong Wen,...
ECAI
2008
Springer
13 years 9 months ago
Privacy-Preserving Query Answering in Logic-based Information Systems
Abstract. We study privacy guarantees for the owner of an information system who wants to share some of the information in the system with clients while keeping some other informat...
Bernardo Cuenca Grau, Ian Horrocks