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객체 지향 언어를 이용한 개념적 데이타 모델 구현에 관한 연구
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- Authors
- Issue Date
- 1997
- Publisher
- 서울대학교 경영정보연구소
- Citation
- Journal of information and operations management, Vol.07, pp. 117-139
- Abstract
- Lack of support for Entity-Relationship (ER) semantics in object-oriented programming languages (OOPL) remains a key roadblock to the effective object-oriented systems development. We extend the object-oriented programming language Smalltalk with Entity-Relationship semantics including entity integrity constraints, cardinality constraints, and set-oriented data access. The meta-classes: PermanentObject, EntityObject, Relationship, and JoinClass provide the necessary structures and operations to support Entity-Relationship semantics. These meta-classes greatly reduce efforts to implement an Entity-Relationship model into an object system.
- Language
- Korean
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