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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.

Implementing a heterogeneous relational database node

Long, J. A. January 1985 (has links)
No description available.

Conceptual graphs in pictorial database systems

Mannion, M. A. G. January 1988 (has links)
No description available.

A semantics-based methodology for integrated distributed database design: Toward combined logical and fragmentation design and design automation.

Garcia, Hong-Mei Chen. January 1992 (has links)
The many advantages of Distributed Database (DDB) systems can only be achieved through proper DDB designs. Since designing a DDB is very difficult and expert designers are relatively few in number, "good" DDB design methodologies and associated computer-aided design tools are needed to help designers cope with design complexity and improve their productivity. Unfortunately, previous DDB design research focused on solving subproblems of data distribution design in isolation. As a result, past research on a general DDB design methodology offered only methodological frameworks that, at best, aggregate a set of non-integrated design techniques. The conventional separation of logical design from fragmentation design is problematic, but has not been fully analyzed. This dissertation presents the SEER-DTS methodology developed for the purposes of overcoming the methodological inadequacies of conventional design methodologies, resolving the DDB design problem in an integrated manner and facilitating design automation. It is based on a static semantic data model, SEER (Synthesized Extended Entity-Relationship Model) and a dynamic data model, DTS (Distributed Transaction Scheme), which together provide complete and consistent modeling mechanisms for acquiring/representing DDB design inputs and facilitating DDB schema design. In this methodology, requirement/distribution analysis and conceptual design are integrated and logical and fragmentation designs are combined. "Semantics-based" design techniques have been developed to allow for end-user design specifications and seamless design schema transformations, thereby simplifying design tasks. Towards our ultimate goal of design automation, an architectural framework for a computer-aided DDB design system, Auto-DDB, was formulated and the system was prototyped. As part of the developmental effort, a real-world DDB design case study was conducted to verify the applicability of the SEER-DTS methodology in a manual design mode. The results of a laboratory experiment showed that the SEER-DTS methodology produced better design outcomes (in terms of design effectiveness and efficiency) than a Conventional Best methodology performed by non-expert designers in an automated design mode. However, no statistically significant difference was found in user-perceived ease of use.

The binary-relational view and aspects of database and knowledge base systems work

Frost, R. A. January 1985 (has links)
No description available.

Query execution and temporal support in a distributed database system

Ling, Daniel Hiak Ong January 1988 (has links)
No description available.

A system for managing distributed multi-media data

Abdul-Huda, Bilal Anas Hamed January 1989 (has links)
No description available.

Logic and databases : an object oriented approach

Higgins, Christopher Paul January 1992 (has links)
No description available.

Scheduling soft-deadline real-time transactions

Aldarmi, Saud Ahmed January 1999 (has links)
No description available.

Content-based retrieval of trademark images

Alwis, T. P. G. L. S. January 2000 (has links)
No description available.

A graphical management system for semantic muiltimedia databases

Daly, William G. January 1989 (has links)
No description available.

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