Deleting a branch is permanent. It CANNOT be undone. Continue?
Dear OpenI User
Thank you for your continuous support to the Openl Qizhi Community AI Collaboration Platform. In order to protect your usage rights and ensure network security, we updated the Openl Qizhi Community AI Collaboration Platform Usage Agreement in January 2024. The updated agreement specifies that users are prohibited from using intranet penetration tools. After you click "Agree and continue", you can continue to use our services. Thank you for your cooperation and understanding.
For more agreement content, please refer to the《Openl Qizhi Community AI Collaboration Platform Usage Agreement》
是性质相同的数据元素的集合,是数据的子集。
什么叫性质相同呢,是指数据元素具有相同数量和类型的数据项,比如,还是刚才的例子,人都有姓名、生日、性别等相同的数据项。
既然数据对象是数据的子集,在实际应用中,处理的数据元素通常具有相同性质 , 在不产生混淆的情况下,我们都将数据对象简称为数据