... nul 空 null attribute空属性 null character string 空字符串 ...
双语例句
1
The NOT NULLattribute of column Credit_Line in table ACCOUNT has to be dropped because some other account types have been added that do not have a credit line.
ACCOUNT 表中的 Credit_Line 列的 NOT NULL 属性必须删除，这是因为添加了没有信用行的其他账号类型。
2
Figure 11 shows an assign transform that sets the prefix attribute of Person to null.
图11显示了一个赋值转换，它将Person的prefix属性设置为空。
3
This tag determines whether or not the field in the name attribute is null.