Một số tính chất của quá trình thừa kế kiểu trong mô hình cơ sở dữ liệu hướng đối tượng

Đoàn Văn Ban


Inheritance is introduced in object-oriented systems to enhance code reuse and create more compact and open able software [2], [3], [7]. Powerful object models adopt multiple inheritance, allowing a type (or class) to inherit from more than one supertype. Unfortunately, this powerful modeling mechanism can generate inheritance conflicts [6], which arise when the same property (or operation) is defined in more than one supertype, or a property (or operation) already present in one supertype, is locally redefined in subtype (overriding). In this article, we focus on the structural component of object-oriented database schema, addressing inheritance and conflict resolution for typed properties.


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Journal of Computer Science and Cybernetics ISSN: 1813-9663

Published by Vietnam Academy of Science and Technology