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ER
1997
Springer
102views Database» more  ER 1997»
14 years 1 months ago
From Ancient Egyptian Language to Future Conceptual Modeling
This paper discusses the construction principles of ancient Egyptian hieroglyphs from the point of view of conceptual modeling. The paper starts with a summary of author’s previo...
Peter P. Chen
ISMIS
1994
Springer
14 years 1 months ago
Reasoning About the Safety of Information: From Logical Formalization to Operational Definition
We assume that safety of information stored in a database depends on the reliability of the agents who have performed the insertions in the database. We present a logic S to repres...
Laurence Cholvy, Robert Demolombe, Andrew J. I. Jo...
VLDB
1994
ACM
134views Database» more  VLDB 1994»
14 years 1 months ago
V-Trees - A Storage Method for Long Vector Data
This paper introduces a new data structure, called V-trees, designed to store long sequences of points in 2D space and yet allow efficient access to their fragments. They also opt...
Maurício R. Mediano, Marco A. Casanova, Mar...
DASFAA
2004
IEEE
110views Database» more  DASFAA 2004»
14 years 1 months ago
Optimising Mediator Queries to Distributed Engineering Systems
Data and computations of a CAD system have been wrapped by a mediator system using CORBA's IIOP Protocol. This allows ad hoc declarative mediator queries to be translated into...
Mattias Nyström, Tore Risch
DEXAW
2004
IEEE
88views Database» more  DEXAW 2004»
14 years 1 months ago
A Possible World Approach to Uncertain Relational Data
Data exchange between embedded systems and other small or large computing devices increases. Since data in different data sources may refer to the same real world objects, data ca...
Ander de Keijzer, Maurice van Keulen