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» On the equivalence of distributed systems with queries and c...
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SAC
2006
ACM
14 years 1 months ago
Revisiting 1-copy equivalence in clustered databases
Recently renewed interest in scalable database systems for shared nothing clusters has been supported by replication protocols based on group communication that are aimed at seaml...
Rui Carlos Oliveira, José Pereira, Alfr&aci...
ENTCS
2007
100views more  ENTCS 2007»
13 years 7 months ago
Extensionality of Spatial Observations in Distributed Systems
We discuss the tensions between intensionality and extensionality of spatial observations in distributed systems, showing that there are natural models where extensional observati...
Luís Caires, Hugo Torres Vieira
DC
2008
13 years 7 months ago
Approximate distributed top- k queries
We consider a distributed system where each node keeps a local count for items (similar to elections where nodes are ballot boxes and items are candidates). A top-k query in such ...
Boaz Patt-Shamir, Allon Shafrir
SIGMOD
2011
ACM
177views Database» more  SIGMOD 2011»
12 years 10 months ago
NetTrails: a declarative platform for maintaining and querying provenance in distributed systems
We demonstrate NetTrails, a declarative platform for maintaining and interactively querying network provenance in a distributed system. Network provenance describes the history an...
Wenchao Zhou, Qiong Fei, Shengzhi Sun, Tao Tao, An...
DPD
2002
114views more  DPD 2002»
13 years 7 months ago
Query Decomposition for a Distributed Object-Oriented Mediator System
The mediator-wrapper approach to integrate data from heterogeneous data sources has usually been centralized in the sense that a single mediator system is placed between a number o...
Vanja Josifovski, Tore Risch