同一个表中,各个字段的名字能够重复。
A. 对
B. 错
不论在什么情况下,都可以使用DROP TABLE删除相应的数据表。
A. 对
B. 错
___ are intended to allow individuals to celebrate an event or tradition of cultural or religious significance.
A.Entertainment
B.Holidays
C.Vocations
D.Occupations
___ is a day or period of time set aside for feasting and celebration.
A. cation
B.Holiday
C.Festival
D.Vocation