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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.
21

Performance considerations in relational and hierarchical data base management systems

Tod, Mary Kathleen January 1980 (has links)
This paper will examine two data base management systems; IMS, an example of a hierarchical data base management system and System R, a relational system. Each system will be described in general terms followed by a discussion of their relative performance. A claim is made that IMS, because of its structure and the procedural nature of its language can be more efficient than System R. Some examples are given to illustrate this claim. There is an increasing need today for readily available information; thus more and more information is being stored in disk files to facilitate rapid retrieval. A relational approach to data base management permits a high-level non-procedural interface for the user, which is important if more people require access to information in a flexible fashion and can not afford or wait for traditional application development. If however a relational data base management system is not as efficient as hierarchical or network systems then new retrieval methods must be found. Associative processors are introduced as a possible solution to this problem and three examples are discussed. RAP, a relational associative processor developed at the University of Toronto, has been used in a performance study to demonstrate the dramatic performance improvements offered by associative processors. This is also discussed. / Science, Faculty of / Computer Science, Department of / Graduate
22

Practical concurrency considerations for a student oriented database management system

Shamper, Julie Anne January 1980 (has links)
The correctness (or integrity) of a database may be destroyed when the database is accessed concurrently by a number of independent transactions. Part of the job of a database management system is to control concurrency so that correctness is guaranteed. This thesis examines concurrency controls in general, and in particular those provided by the Educational Data Base System (EDBS). It is concluded that EDBS facilities are not sufficient to guarantee correctness. Several alternatives are proposed whereby correctness can be guaranteed. An approach is selected based on ease of implementation rather than on the degree of concurrency provided. Guaranteeing correctness and at the same time providing a high degree of concurrency turns out to be a very difficult problem both in theory and in practice. / Science, Faculty of / Computer Science, Department of / Graduate
23

Integrity control in a relational database

Ho, Hing Cheung. January 1982 (has links)
No description available.
24

Optimization of queries to a relational database

Orenstein, J. A. January 1979 (has links)
No description available.
25

Data management for interoperable systems

Mühlberger, Ralf Maximilian. Unknown Date (has links)
No description available.
26

Dynamic data dictionary

Phillips, Robert William January 2010 (has links)
Typescript (photocopy). / Digitized by Kansas Correctional Industries
27

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

Frost, R. A. January 1985 (has links)
No description available.
28

A system for managing distributed multi-media data

Abdul-Huda, Bilal Anas Hamed January 1989 (has links)
No description available.
29

Logic and databases : an object oriented approach

Higgins, Christopher Paul January 1992 (has links)
No description available.
30

A graphical management system for semantic muiltimedia databases

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

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