209 search results - page 1 / 42 » Derived Data Update in Semantic Databases |
VLDB
1989
ACM
13 years 8 months ago
1989
ACM
The derived data update problem involves the transformation of modifications of derived facts into corresponding changes to base facts and other derived facts. Using a database sc...
EDBT
2006
ACM
14 years 4 months ago
2006
ACM
Abstract. We present in this paper a new model for representing probabilistic information in a semi-structured (XML) database, based on the use of probabilistic event variables. Th...
ECRTS
2004
IEEE
13 years 8 months ago
2004
IEEE
Many real-time systems need to maintain fresh views which are derived from shared data that are distributed among multiple sites. When a base data item changes, all derived views ...
ADC
2001
Springer
13 years 9 months ago
2001
Springer
The Sketch Data Model (SkDM) is a new semantic modelling paradigm based on category theory (specifically on categorical universal algebra), which has been used successfully in se...
SAC
2004
ACM
13 years 10 months ago
2004
ACM
The amount of data handled by real-time and embedded applications is increasing. Also, applications normally have constraints with respect to freshness and timeliness of the data ...