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IS
2007
14 years 9 months ago
Semantic optimization techniques for preference queries
Preference queries are relational algebra or SQL queries that contain occurrences of the winnow operator (find the most preferred tuples in a given relation). Such queries are pa...
Jan Chomicki
101
Voted
SIGMOD
2004
ACM
173views Database» more  SIGMOD 2004»
15 years 9 months ago
Relaxed Currency and Consistency: How to Say "Good Enough" in SQL
Despite the widespread and growing use of asynchronous copies to improve scalability, performance and availability, this practice still lacks a firm semantic foundation. Applicati...
Hongfei Guo, Jonathan Goldstein, Per-Åke Lar...
65
Voted
VLDB
1992
ACM
93views Database» more  VLDB 1992»
15 years 1 months ago
A Method for Change Computation in Deductive Databases
Change computation is an essential component in several capabilities of a deductive database,such as integrity constraints checking, materialized view maintenanceandcondition moni...
Toni Urpí, Antoni Olivé
ACSC
2007
IEEE
15 years 4 months ago
Domination Normal Form - Decomposing Relational Database Schemas
A common approach in designing relational databases is to start with a universal relation schema, which is then decomposed into multiple subschemas. A good choice of subschemas ca...
Henning Köhler
ISORC
2000
IEEE
15 years 2 months ago
Establishing a Data-Mining Environment for Wartime Event Prediction with an Object-Oriented Command and Control Database
This paper documents progress to date on a research project, the goal of which is wartime event prediction. The paper describes the operational concept, the datamining environment...
Marion G. Ceruti, S. Joe McCarthy