OSCAR(V2.0) is an object -oriented database management system which has been worked out by computer science department of ZheJiang University. A new data describe language (DDL) supporting STEP is introduced in this paper.

• OSCAR（V2.；0）是浙江大学计算机系自行研制的一个OODB系统，本文介绍了OSCAR的数据描述语言（DDL），它支持STEP标准下的标准数据存取接口（SDAI）。