Incorporating hierarchy in a relational model of data
Incorporating hierarchy in a relational model of data
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DOI：
10.1145/67544.66934
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发表时间：
1989-06
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影响因子：
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通讯作者：
H. V. Jagadish
中科院分区：
文献类型：
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作者：
H. V. Jagadish
我们扩展了数据的关系模型，允许类作为属性值，从而能够表示对象的层次结构。明确支持继承，包括带有异常的多重继承。关于对象类的事实可以与关于对象实例的事实以相同的方式进行存储和操作。我们的模型与标准关系模型向上兼容。
We extend the relational model of data to allow classes as attribute values, thereby permitting the representation of hierarchies of objects. Inheritance, including multiple inheritance with exceptions, is clearly supported. Facts regarding classes of objects can be stored and manipulated in the same way as facts regarding object instances. Our model is upwards compatible with the standard relational model.