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18 papers · 1 filter
Operation-based Collaborative Data Sharing for Distributed Systems
Masato Takeichi
Collaborative Data Sharing raises a fundamental issue in distributed systems. Several strategies have been proposed for making shared data consistent between peers in such a way th…
HTF: Homogeneous Tree Framework for Differentially-Private Release of Location Data
Sina Shaham, Gabriel Ghinita, Ritesh Ahuja +2
Mobile apps that use location data are pervasive, spanning domains such as transportation, urban planning and healthcare. Important use cases for location data rely on statistical…
Conceptual Schema Optimisation -- Database Optimisation before sliding down the Waterfall
Henderik A. Proper, Terry A. Halpin
In this article we discuss an approach to database optimisation in which a conceptual schema is optimised by applying a sequence of transformations. By performing these optimisatio…
ConQuer-92 -- The revised report on the conceptual query language LISA-D
H. A. Proper
In this report the conceptual query language ConQuer-92 is introduced. This query language serves as the backbone of InfoAssistant's query facilities. Furthermore, this language ca…
Generating Significant Examples for Conceptual Schema Validation
H. A. Proper
This report bases itself on the idea of using concrete examples to verify conceptual schemas, and in particular cardinality constraints. When novice ORM modellers model domains, th…
Discovering the Information that is lost in our Databases -- Why bother storing data if you can't find the information?
P. D. Bruza, H. A. Proper
We are surrounded by an ever increasing amount of data that is stored in a variety of databases. In this article we will use a very liberal definition of \EM{database}. Basically a…