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VLDB
1987
ACM
72views Database» more  VLDB 1987»
9 years 5 months ago
Providing Time-Related Constraints for Conventional Database Systems
A model for a historical database is described which is based upon time-stamped tuples as the unit of storage. The model includes both physical and logical time-stamps. The techni...
T. Abbod, K. Brown, H. Noble
CAISE
2003
Springer
9 years 6 months ago
Time Related Factors of Data Accuracy, Completeness, and Currency in Multi-Channel Information Systems
Multi-channel information systems involve data redundancy, which, in turn, requires the implementation of synchronization mechanisms among overlapping databases. This need for peri...
Cinzia Cappiello, Chiara Francalanci, Barbara Pern...
JSW
2008
196views more  JSW 2008»
9 years 2 months ago
Providing Data Items with Time Constraints in Multi-Channel Broadcasting Environments
In a mobile computing system, users carrying portable devices can access database services from any location without requiring a fixed position in the networking environment. Some ...
Ding-Jung Chiang, Hwei-Jen Lin, Timothy K. Shih
VLDB
1999
ACM
124views Database» more  VLDB 1999»
9 years 6 months ago
Cost Models DO Matter: Providing Cost Information for Diverse Data Sources in a Federated System
An important issue for federated systems of diverse data sources is optimizing cross-source queries, without building knowledge of individual sources into the optimizer. This pape...
Mary Tork Roth, Fatma Ozcan, Laura M. Haas
SIGMOD
2010
ACM
200views Database» more  SIGMOD 2010»
9 years 2 months ago
QRelX: generating meaningful queries that provide cardinality assurance
In many business and consumer applications, queries have cardinality constraints. However, current database systems provide minimal support for cardinality assurance. Consequently...
Manasi Vartak, Venkatesh Raghavan, Elke A. Rundens...
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