数据库管理系统(DBMS)提供数据操纵语言(DML)及它的翻译程序,实现对数据库数据的操作,包括数据插入、删除、更新和 【1】 。
参考答案:查询或检索
Man: How can you finish that long English novel only in one week Woman: I found it very interesting. But I spent some time on consulting new words in a dictionary. Question: What does the woman mean
A.It is fun to read the novel.
B.She can't understand the novel.
C.New words in the novel make it very difficult to read.
D.She didn't finish the novel in one week.
有一个网络故障影响了200个用户。与此同时,总经理的打印机也出现了故障,而他急于想打印一份报告。可以从这些信息得出下列哪个结论()
A.没有足够的信息决定哪个事件具有更高的优先级
B.必须先修理总经理的打印机,因为该事件具有更高的业务影响度
C.两个事件具有相同的优先级
D.网络故障比总经理的打印机具有更高的事件优先级,因为它会影响更多的人