一种面向演化的模式元数据描述机制*

李旭晖,于滔,李婷,李逸文,顾进广

An Evolutionary Schema for Metadata Description

Xuhui Li,Tao Yu,Ting Li,Yiwen Li,Jinguang Gu

图2 教学关系ENM图

Fig.2 Teaching Relationship Figure