session1-t4b.htm
来自「北大青鸟内部的PPT教材」· HTM 代码 · 共 42 行
HTM
42 行
<!doctype html public "-//w3c//dtd html 4.0 transitional//en">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<meta name="Author" content="Andy">
<meta name="GENERATOR" content="Microsoft FrontPage 5.0">
<title>绘制 E-R 图</title>
</head>
<body text="#000000" bgcolor="#FFFFFF" link="#000066" vlink="#666600" alink="#000066">
<p> </p>
<center><table BORDER=0 COLS=1 WIDTH="520" >
<tr>
<td> <center>
<span style="color: #000099; font-family: 宋体,Arial; font-size: 18pt"><b>绘制
E-R 图</b></span><br>
<br>
<hr WIDTH="100%">
<font style="font-size:9pt"> </font>
<div align="left">
<p><font style="font-size:9pt">在开始绘制 ER 图之前,必须先定义实体,定义属性,然后定义关系。<br>
考虑到这些因素,可以绘制出如下所示的实体关系图。</font></p>
<p align="center"><img src="../images/00000002.gif" width="520" height="320"></p>
<p align="center"><font style="font-size:9pt">图 1</font></p>
<p align="center"> </p>
</div>
</center>
<p>
<hr width="100%"> <center>
<p><a href="session1.htm"><img src="../images/back.gif" width="54" height="25" border="0"></a></p>
</center></td>
</tr>
<tr>
<td><font face="宋体,Arial,Helvetica"><font style="font-size:9pt"> </font></font></td>
</tr>
</table>
</center>
</body>
</html>
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