NDLTD Global ETD Search
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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.

Search results

Showing 891 to 900 of 3650 (0.026 seconds)
891

Security Issues in Heterogeneous Data Federations

Leighton, Gregory Unknown Date
No description available.
data security
XML
database theory
access control
data privacy
892

Low level structures in the implementation of the relational algebra

Otoo, Ekow J. January 1983 (has links)
We present storage organization schemes and a tuple density model of a relation, for the efficient processing of information in a relational database. The underlying concept used in the design of the storage schemes and the density model is that of a multidimensional array. These organizational schemes are: Multidimensional Paging, Dynamic Multipaging, and two dynamic multidimensional hashing schemes, DMHL and DMHE. The DMHL and DMHE schemes are the respective extensions of linear hashing and extendible hashing for multidimensional data organization. Storage mapping functions for extendible arrays are developed as the page addressing functions in the dynamic multidimensional structures. Performance of the multipaging schemes are examined through empirical studies. / We show how relations are structured with these organizational methods to provide symmetric access to the data on any combination of attributes. Further we derive size estimation formulae for the result of the various relational operations using the density model.
Database management.
Data structures (Computer science)
893

Join processing on a hypercube multicomputer

Lin, Eileen Tien January 1990 (has links)
No description available.
Database management
Computer architecture
Data structures (Computer science)
894

On conceptual design of active databases

Tanaka, Asterio Kiyoshi January 1992 (has links)
No description available.
Database design
Data structures (Computer science)
File organization (Computer science)
895

An evaluation of alternative strategies for clustering genes from medical text

Civera Saiz, Jorge January 2003 (has links)
No description available.
Medical literature
Genes Research
Data mining Evaluation
Database searching Evaluation
896

Extensible object-oriented databases with dynamic schemas

Morsi, Magdi, M. A. 08 1900 (has links)
No description available.
Object-oriented databases
Database management
Computer-aided design
897

Redesign of distributed relational databases

Karlapalem, Kamalakar 12 1900 (has links)
No description available.
Relational databases
Database design
898

The application of knowledge-based techniques to constraint management in engineering databases

White, Andrew Murray 12 1900 (has links)
No description available.
Engineering Data processing
Expert systems (Computer science)
Database management
899

Geometric performance evaluation of concurrency control in database systems

Rallis, Nicholas. January 1984 (has links)
No description available.
Database management.
Geometry -- Data processing.
900

Gestion d'information sur les procédés thermiques par base de données

Gagnon, Bertrand. January 1986 (has links)
No description available.

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