Results 301 to 310 of about 6,545,298 (346)

Independence in Database Relations

2013
We investigate the implication problem for independence atoms X⊥Y of disjoint attribute sets X and Y on database schemata. A relation satisfies X⊥Y if for every X-value and every Y-value that occurs in the relation there is some tuple in the relation in which the X-value occurs together with the Y-value.
Kontinen, J., Link, S., Väänänen, J.
openaire   +2 more sources

Physical database design for relational databases

ACM Transactions on Database Systems, 1988
This paper describes the concepts used in the implementation of DBDSGN, an experimental physical design tool for relational databases developed at the IBM San Jose Research Laboratory. Given a workload for System R (consisting of a set of SQL statements and their execution frequencies), DBDSGN suggests physical configurations for efficient performance.
S. Finkelstein, M. Schkolnick, P. Tiberio   +2 more
openaire   +1 more source

MDDE: multitasking distributed differential evolution for privacy-preserving database fragmentation

The VLDB journal, 2022
Yong-Feng Ge, M. Orlowska, Jinli Cao, Hua Wang, Yanchun Zhang   +4 more
semanticscholar   +1 more source

Relational Databases

2021
Konstantinos Domdouzis, Peter Lake, Paul Crowther   +2 more
openaire   +1 more source

A Modeling and Connectivity Analysis Method for Electricity Distribution Network Based on Relation Database in GIS

International Conference on Intelligent Computation Technology and Automation, 2008
Tiefeng Zhang, Jinsha Yuan, Xueming Yang, Yinghui Kong   +3 more
semanticscholar   +1 more source

Converting Temporal Relational Database into Temporal Object Relational Database

2017
This paper presents an approach for migrating existing temporal relational database (TRDB), into temporal object relational database (TORDB). This is done by enhancing a representation of a varying time database’s structure, in order to make hidden semantic explicit.
Soumiya Ain El Hayat, Mohamed Bahaj
openaire   +1 more source

Qualitative Spatial Relation Database for Semantic Web

Asian Semantic Web Conference, 2006
Sheng-sheng Wang, Da-you Liu
semanticscholar   +1 more source

A universal relation database system implemented via the network model

ACM SIGACT-SIGMOD-SIGART Symposium on Principles of Database Systems, 1982
S. Kuck, Y. Sagiv
semanticscholar   +1 more source

Relational Databases

The American Mathematical Monthly, 1983
Quentin F. Stout, Patricia A. Woodworth
openaire   +1 more source

The Nested Universal Relation Database Model

Lecture Notes in Computer Science, 1992
M. Levene
semanticscholar   +1 more source