单选题
发布日期:2020-04-10
You cannot update a view with group functions.
When you update a view group functions are automatically computed.
When you update a view only the constraints on the underlying table will be in effect.
When you update a view the constraints on the views always override the constraints on the underlying tables.
题王网让考试变得更简单
扫码关注题王,更多免费功能准备上线!
此试题出现在
其他考试
A-B-A-C-A…A表示什么曲式形式()
依恋的类型有哪些?并结合实例谈谈如何形成孩子良好的依恋。
向黏膜生长,呈扁平突出肿块的是()。
分乘与旅行变更同时发生时,按()核收一次手续费。
砖基础采用台阶式、逐级向下放大的做法,一般为每2皮砖挑出()的砌筑方法。
使用砂轮机的安全要求_。
国际单位制(SI)包括()基本*单位。
6240ZJ型柴油机排气总管温度应小于()℃。
男,36岁,心悸3年,既往体健,查体:BP130/80mmHg,双肺未闻及湿啰音,心脏各瓣膜区未闻及杂音。心律不齐,心电图示心室率140次/分,P波消失,代之大小不等的f波,该患者最可能出现的体征是()
教育科学研究的基本方法主要有哪些?
暂无相关推荐~
What is true about updates through a view? ()
What is true about updates through a view?()
Which statement regarding the contents of the V$PARAMETER view is true?()
View the Exhibit. Which statements are true regarding the USERS tablespace()
When rejecting applied an dependent updates on an AIX 5L system, which of the fo...
EIGRP uses five generic packet types (hello, updates, queries, replies, acknowle...
Which of the following statements about MD5 Routing Updates authentication is va...
You need to recommend a technology to deploy and manage updates of App2 for the ...
Automatic Updates should be performed to ensure that the computer has the latest...
What is the proper way to ensure that updates to the /etc/aliases file are seen ...