摘要： 首先介绍主要的３种嵌套属性上的索引实现技术及其操作算法，并分析和比校了它们的优缺点，然后介绍了面向对象工程数据库管理系统ＯＳＣＡＲ中的索引实现技术。

关键词: 面向对象工程数据库管理系统, 查询优化, 复杂对象

Abstract: This paper firstly introduces the implemetation technique and operation algorithms of three main indexs, analysing andcomparing them from the dimensions of feasibility and performance. Then the index implementation techniques in OSCAR, which is an object-oriented engineering database management system, were presented

中图分类号: 

• G354.4