Which two are true about Optimizer Statistics? A)They are gathered by the Manageability Monitor(MMON) background process. B)They can be gathered by executing the PL/SQL procedures in the DBMS_STATES package. C)They do not persist across instance restarts.
题目： Alice and Bob are big fans of math. In particular, they are very excited about playing games that are related to numbers. Whenever they see a puzzle like Sudoku, they cannot stop themselves from solving it. The objective of Sudoku is to fill a 9×9 gri
https://www.edsurge.com/news/2019-02-04-game-based-learning-is-changing-how-we-teach-here-s-why This article is part of the guide Game-Based Learning: Preparing Students for The Future. Dan White, the co-founder and CEO of Filament Games, an educati
Which two are true about Oracle's Optimizer statistics? A)They are automatically updated when ddl statements execute. B)They can be calculated exactly. C)They can be gathered on external tables. D)They are automatically updated when dml statements ex
Which three are true about Optimizer Statistics? A)They can be gathered manually B)They are automatically updated by DML statements C)They contain the execution plan for each executed SQL statement. D)They include the number of rows in a table and the num
Be动词的形式：现在：be, is, am, are, 过去：was, were, 现在分词：being, 过去分词：been; 1. The man is back.2. They are back.3. He was back.4. They were back.5. They have been back. (备注：现在完成时) Be动词的用法：后面接名词，形容词，地点副词或短语作补足语； 1. The man is
Which two are true about PL/SQL objects? A)They must be in an invalid state to be recompiled. B)They can never be manually recompiled. C)They can be manually recompiled. D)They must be manually recompiled. E)They can be automatically re
Which is true about invalid PL/SQL objects? A)They are automatically recompiled against the new definition of a referenced object when they are called. B)They must be manually recompiled before they can be used if a DDL is performed on a table that
原文链接：http://www.cnblogs.com/RelaxTintin/archive/2008/12/18/1357521.html I recently help a new Scrum team to start to practice Agile Scrum in their project. During the first project visioning meeting, I asked the team to give their
How to maintain the digital wood background wall decoration board? The stubborn stains on marble digital board can be washed with hard brush dipped in soda water; for tea or coffee stains, they can be scrubbed with hard brush and neutral detergent, but
As two icons of the Great Depression, Bonnie and Clyde represent the ultimate criminal couple. Stories were written, headlines captured, and films were made about the two bank robbers known as Romeo and Juliet in a getaway car. The new generation of Bonni
@TOC POJ3279：Fliptile Time Limit: 2000ms Memory Limit: 65536K Total Submissions: 【好多好多吧】 Accepted: 【反正这之前没我】 Description Farmer John knows that an intellectually satisfied cow is a happy cow who will give more milk. He has arran
给大型科技公司的信号20 考研题源外刊精讲赏析-23 期-原文 Ⅰ Calls to break up Facebook this week were interrupted by a more immediate threat to a companyjust down the road1. The Supreme Court’s decision allowing an antitrust lawsuit against Apple toproceed is r
Welcome back to what’s going to be the last “official” part of this series – I’ll do more GPU-related posts in the future, but this series is long enough already. We’ve been touring all the regular parts of the graphics pipeline, down to different
2.Early Education of Children 儿童的早期教育 (1) In bringing up children,every parent watches eagerly the child's acquisition of each new skill—the first spoken words,the first independent steps,or the beginning of reading and writing.It is often tempting t
I recently help a new Scrum team to start to practice Agile Scrum in their project. During the first project visioning meeting, I asked the team to give their team a name, whatever the name is funny, formal or crazy. But I need them to find a name they li
I recently help a new Scrum team to start to practice Agile Scrum in their project. During the first project visioning meeting, I asked the team to give their team a name, whatever the name is funny, formal or crazy. But I need them to find a name they li
Golden Image or Foil Ball? The essential basis of running services in “the cloud” is that they run in virtual machines, which come with their own idioms and practices for managing them. One of the mainstays of managing virtual machines (’VMs’) uses what
from what has been discussed above ， we can easily conclude that with continual efforts of both sides,sooner or later () is going to be achieved. apart from () , they should focus more on () . only if () could they () . to do () , it is impera
该文索所起之因：在练习列表的操作时，要输出一波操作后的列表，但是一直让本人耿耿于怀的时下边的这个现象： 红色框框里是字符串，黄色框框里是列表，同样是只对一个元素进行的操作，为啥输出时字符串是作为一个整体输出，而列表却输出了一个“None”，什么情况？于是多次实验，不管是remove还是extent
"""题目2：输入两个字符串，从第一字符串中删除第二个字符串中所有的字符。例如，输入”They are students.”和”aeiou”，则删除之后的第一个字符串变成”Thy r stdnts.”。解题思路: 遍历第二个字符串中所有的字符,将第一字符串中包含的这个字符全部用''替换"""def rm_alp(str, alphabe
这篇文章是《新视野大学英语》第四册的第一单元的文章，很好的一篇议论文，读起来也很有意思。 1 If you're a man, at some point a woman will ask you how she looks. 如果你是一位男士，肯定在某个时候会有女士问你她看起来怎么样。 2 You must be careful how you answer this
A real loser is somebody that's so afraid of not winning, they don't even try. 真正的失败者，是那些因为害怕不能成功，就连试都不敢试的人。 It seems that this sentence comes from a movie named ' Little Miss Sunshine.' In the movie, it goes as following: What is a re
What did you study at university? If it was something along the lines of law or business you mightwhat to look away now. That's because according to new research, which has found a link between ouruniversity subjects and our personalities, you have s
A. Eating Soup The three friends, Kuro, Shiro, and Katie, met up again! It's time for a party... What the cats do when they unite? Right, they have a party. Since they wanted to have as much fun as possible, they invited all their friends. Now nn cat
