Which values are NOT permitted to be part of the primary key?

admin2009-02-24 39

问题 Which values are NOT permitted to be part of the primary key?

选项 A、alpha-numeric characters
B、punctuation
C、special characters
D、NULL

答案D

解析

转载请注明原文地址:https://www.kaotiyun.com/show/mHNZ777K

笔试

相关试题推荐

随机试题

最新回复(0)