在SQL语言中,为了修改基本表的结构,可以使用语句 【 】 。
参考答案:ALTERTABLE或ALTER
Lee Arm Company collected the following amounts for subscriptions to the magazine it publishes during the past year:()
A.Date
B.Amount Collected
C.Subscription
D.April 1
E.$ 60000
F.one year
G.July 1
H.$30000
I.two years
J.October 1
K.$36000
L.three years
著名女词人李清照的第二任丈夫是谁?