以层次模型建立的数据库系统,其主要代表是
A.DBTG
B.SQL
C.MIS
D.IMS
参考答案:D
解析: IMS是以层次模型建立的数据库系统。
下图为食肉目分类等级示意图。下列推理不正确的是( )
A.图中最大的分类单位是目
B.虎和狮的相似程度非常大
C.猫和虎同属于食肉目猫科
D.猫和犬没有任何亲缘关系
On July 1, 1982, Ms. Fox deposited $10, 000 in a new account at the annual interest rate of 12 percent compounded monthly. If no additional deposits or withdrawals were made and if interest was credited on the last day of each month, what was the amount of money in the account on September 1, 1982 ?()
A.$10,200
B.$10,201
C.$11,100
D.$12,100
E.$12,544