📄 exp_096.htm
字号:
<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=gb2312">
<title>Ocp test </title>
</head>
<body bgcolor="white" text="black" link="blue" vlink="purple" alink="red">
<p><b><span style="font-size:22pt">Explaination 096: </span></b></p>
<span style="font-size:18pt">
<p>
Command TRUNCATE is used to remove all row data from the table, while leaving the definition of the table intact, including the definition of constraints and any associated database objects as indexes, constraints, and triggers on the table. <br>
</p>
<p>
Incorrect Answers <br>
</p>
<p>
A: Command TRUNCATE does not remove the table. DROP TABLE command does that. <br>
</p>
<p>
C: There is no command in Oracle to shortens the table to 10 rows: but you can do this with queries. <br>
</p>
<p>
D: This command does not remove all columns from a table. <br>
</p>
<p>
E: This command does not remove all foreign keys from a table. <br>
</p>
<p>
OCP Introduction to Oracle 9i: SQL Exam Guide, Jason Couchman, p. 225 <br>
</p>
<p>
Chapter 5: Creating Oracle Database Objects <br>
</p>
<p>
</p>
</span>
</body>
</html>
<br>
⌨️ 快捷键说明
复制代码
Ctrl + C
搜索代码
Ctrl + F
全屏模式
F11
切换主题
Ctrl + Shift + D
显示快捷键
?
增大字号
Ctrl + =
减小字号
Ctrl + -