Accession Number:

ADA003738

Title:

Towards a Formulation and Definition of Data Reorganization,

Descriptive Note:

Corporate Author:

MICHIGAN UNIV ANN ARBOR DEPT OF INDUSTRIAL AND OPERATIONS ENGINEERING

Personal Author(s):

• Fry,James P.
• Jeris,David W.

Report Date:

1974-01-01

Pagination or Media Count:

32.0

Abstract:

Data reorganization can be informally defined as the process of changing the logical andor physical organization of data so that it can be processed more effectively in a new hardwaresoftware environment. Motivation for data reorganization is presented and examples given. The major issues that were taken into consideration in the formulation of a definition of data reorganization are discussed. These include the scope of the definition and issues of loss of information and data independence. A formal definition of data reorganization is presented and discussed through the use of a four level model of data. The spectrum of reorganization, from logical to physical, is discussed, and examples presented. Finally, the complexity of data reorganization operations is discussed.

Descriptors:

• *DATA PROCESSING
• DATA MANAGEMENT
• INFORMATION SYSTEMS
• COMPUTERS
• COMPUTER PROGRAMMING
• INFORMATION RETRIEVAL
• USER NEEDS
• TRANSFORMATIONS

Subject Categories:

• Information Science
• Computer Programming and Software
• Computer Hardware

Distribution Statement:

APPROVED FOR PUBLIC RELEASE