摘要： 全面介绍了面向对象的数据库实验系统SDOODBTS的查询语言SDQL。它建立在面向对象数据模型上,具有类SQL的语法风格,提供了较完整的模式定义、查询和数据修改机制,在索引、高级对象接口、查询中的封装性保持等问题上具有自己的特点。

关键词: 面向对象数据模型, 层次, 对象接口, 查询语言

Abstract: SDQL is a query language for our object-oriented database system SDOODBTS.It combines both object-oriented paradigm and a SQL-like systax style. It supplies facilities for schema definition, query and data manipulation, especially makes further research on index mechanism, the processing of the result sets and the consistency between encapsulation and the query processing.

中图分类号: 

• TP312