Issues in object-oriented data-base schemas
The successful use of data-base management systems in data-processing applications has created a substantial amount of interest in applying data-base techniques to such areas as knowledge bases and artificial intelligence (AI), computer-aided design (CAD), and office information systems (OIS). The practical applications of object-oriented data bases, such as CAD, AI, and OIS require the ability to dynamically make a wide variety of changes to the data-base schema. This process is called schema evolution, for which the author establishes a consistent and complete framework. Based on his framework, the MCC ODBS group implemented a schema manager within the prototype object-oriented data-base system, ORION. On top of the schema manager of ORION, a graphical editor PSYCHO was implemented. A technique is presented that enables users to manipulate schema versions explicitly and maintain schema-evolution histories in object-oriented data-base environments.
- Research Organization:
- Texas Univ., Austin, TX (USA)
- OSTI ID:
- 5172864
- Resource Relation:
- Other Information: Thesis (Ph. D.)
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ARTIFICIAL INTELLIGENCE
DATA BASE MANAGEMENT
COMPUTER-AIDED DESIGN
INFORMATION SYSTEMS
KNOWLEDGE BASE
DYNAMIC PROGRAMMING
MODIFICATIONS
MANAGEMENT
PROGRAMMING
990200* - Mathematics & Computers
990300 - Information Handling