📄 exp_095.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 095: </span></b></p>
<span style="font-size:18pt">
<p>
There is only one SQL*Plus command in this list: DESCRIBE. It cannot be used as SQL command. This command returns a description of tablename, including all columns in that table, the datatype for each column, and an indication of whether the column permits storage of NULL values. <br>
</p>
<p>
Incorrect Answers <br>
</p>
<p>
A: INSERT is not a SQL*Plus command. It's data-manipulation language (DML) command. <br>
</p>
<p>
B: UPDATE is not a SQL*Plus command. It's data-manipulation language (DML) command. <br>
</p>
<p>
C: SELECT is not a SQL*Plus command. <br>
</p>
<p>
E: DELETE is not a SQL*Plus command. It's data-manipulation language (DML) command. <br>
</p>
<p>
F: RENAME is not a SQL*Plus command. <br>
</p>
<p>
OCP Introduction to Oracle 9i: SQL Exam Guide, Jason Couchman, p. 43 <br>
</p>
<p>
Chapter 1: Overview of Oracle Databases
</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 + -