SIGMOD
1999
ACM
14 years 3 months ago
1999
ACM
Systems for managing and querying semistructured-data sources often store data in proprietary object repositories or in a tagged-text format. We describe a technique that can use ...
SIGMOD
1999
ACM
14 years 3 months ago
1999
ACM
The design of webbases, database systems for supporting Webbased applications, is currently an active area of research. In this paper, we propose a 3-layer architecture for design...
SIGMOD
1999
ACM
14 years 3 months ago
1999
ACM
A major bottleneck in implementing sampling as a primitive relational operation is the ine ciency ofsampling the output of a query. It is not even known whether it is possible to ...
SIGMOD
1999
ACM
14 years 3 months ago
1999
ACM
In this paper we present a mechanism for translating constraint queries, i.e., Boolean expressions of constraints, across heterogeneous information sources. Integrating such syste...
SIGMOD
1999
ACM
14 years 3 months ago
1999
ACM
SIGMOD
1999
ACM
14 years 3 months ago
1999
ACM
SIGMOD
1999
ACM
14 years 3 months ago
1999
ACM
SIGMOD
1999
ACM
14 years 3 months ago
1999
ACM
In recent years, many data mining methods have been proposed for finding useful and structured information from market basket data. The association rule model was recently propos...
SIGMOD
1999
ACM
14 years 3 months ago
1999
ACM
Selectivity estimation of queries is an important and wellstudied problem in relational database systems. In this paper, we examine selectivity estimation in the context of Geogra...
SIGMOD
1999
ACM
14 years 3 months ago
1999
ACM
In large data warehousing environments, it is often advantageous to provide fast, approximate answers to complex aggregate queries based on statistical summaries of the full data....