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» Classification of Fuzzy Data in Database Management System
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CHI
2004
ACM
15 years 10 months ago
Collections: flexible, essential tools for information management
While collections—aggregation mechanisms such as folders, buddy lists, photo albums, etc.—clearly play a central role in information management, the potential benefits of true...
David R. Karger, Dennis Quan
PODS
2009
ACM
86views Database» more  PODS 2009»
16 years 5 months ago
Reverse data exchange: coping with nulls
An inverse of a schema mapping M is intended to "undo" what M does, thus providing a way to perform "reverse" data exchange. In recent years, three different f...
Ronald Fagin, Phokion G. Kolaitis, Lucian Popa, Wa...
DOCENG
2004
ACM
15 years 10 months ago
Querying XML documents by dynamic shredding
With the wide adoption of XML as a standard data representation and exchange format, querying XML documents becomes increasingly important. However, relational database systems co...
Hui Zhang 0003, Frank Wm. Tompa
CCS
2007
ACM
15 years 11 months ago
Managing RBAC states with transitive relations
In this paper, we study the maintenance of role-based access control (RBAC) models in database environments using transitive closure relations. In particular, the algorithms that ...
Chaoyi Pang, David P. Hansen, Anthony J. Maeder
CORR
2010
Springer
139views Education» more  CORR 2010»
14 years 11 months ago
Data Cleaning and Query Answering with Matching Dependencies and Matching Functions
Matching dependencies were recently introduced as declarative rules for data cleaning and entity resolution. Enforcing a matching dependency on a database instance identifies the ...
Leopoldo E. Bertossi, Solmaz Kolahi, Laks V. S. La...