On Estimating Semantic Loss in Peer Data Management Systems

2009 ◽  
Author(s):  
Yannis Delveroudis ◽  
Paraskevas V. Lekeas ◽  
Dora Souliou
Keyword(s):  
Data Management ◽  
Management Systems ◽  
Data Management Systems ◽  
Peer Data Management

SCHEMA MEDIATION IN PEER DATA MANAGEMENT SYSTEMS

2011 ◽  
Vol 20 (03) ◽  
pp. 261-305
Author(s):  
JIE ZHAO ◽  
RACHEL POTTINGER ◽  
CODY BROWN ◽  
SHRIRAM RAJAGOPALAN
Keyword(s):  
Data Management ◽  
Stable State ◽  
Management Systems ◽  
Light Weight ◽  
Access To Information ◽  
Sources Of Information ◽  
Data Management Systems ◽  
Share Data ◽  
Peer Data Management ◽  
Current Systems

Peer Data Management Systems (PDMSs) allow the efficient sharing of data between peers with overlapping sources of information. These sources share data through mappings between peers. In current systems, queries are asked over each peer's local schema and then translated using the mappings between peers. While this allows the data to be accessed uniformly, users lack access to information that is not in their own schemas. In this paper, we propose a light-weight, automatic method to create a mediated schema in a PDMS. Our work benefits PDMSs by allowing access to more data and without unduly stressing the peer's resources or requiring additional resources such as ontologies. We present our system — MePSys, which creates a mediated schema in PDMSs automatically using the existing mappings provided to translate queries. We further discuss how to update the mediated schema in a stable state, i.e. after the system setup period.

A research agenda for query processing in large-scale peer data management systems

2008 ◽  
Vol 33 (7-8) ◽  
pp. 597-610 ◽  
Author(s):  
Katja Hose ◽  
Armin Roth ◽  
André Zeitz ◽  
Kai-Uwe Sattler ◽  
Felix Naumann
Keyword(s):  
Data Management ◽  
Query Processing ◽  
Research Agenda ◽  
Large Scale ◽  
Management Systems ◽  
Data Management Systems ◽  
Peer Data Management
Sign in / Sign up

Export Citation Format

Share Document