SIGMOD
1999
ACM
14 years 4 months ago
1999
ACM
Research and products for the integration of heterogeneous legacy source databases in data warehousing have addressed numerous data quality problems in or between the sources. Suc...
SIGMOD
1999
ACM
14 years 4 months ago
1999
ACM
It is envisaged that the application of the multilevel security (MLS) scheme will enhance exibility and e ectiveness of authorization policies in shared enterprise databases and w...
SIGMOD
1999
ACM
14 years 4 months ago
1999
ACM
SIGMOD
1999
ACM
14 years 4 months ago
1999
ACM
Query processing in data integration occurs over network-bound, autonomous data sources. This requires extensions to traditional optimization and execution techniques for three re...
SIGMOD
1999
ACM
14 years 4 months ago
1999
ACM
SIGMOD
1999
ACM
14 years 4 months ago
1999
ACM
Classification is an important data mining problem. Given a training database of records, each tagged with a class label, the goal of classification is to build a concise model ...
SIGMOD
1999
ACM
14 years 4 months ago
1999
ACM
SIGMOD
1999
ACM
14 years 4 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 4 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 4 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 ...