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📄 如何画数据库er图.htm

📁 数据库系统工程师的考点 难点 很值得一看的有
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lang=EN-US style="mso-fareast-font-family: 'Times New Roman'"><SPAN 
style="mso-list: Ignore">1）<SPAN style="FONT: 7pt 'Times New Roman'">&nbsp; 
</SPAN></SPAN></SPAN><![endif]><SPAN 
style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'">分析实际情况</SPAN></P>
<P class=MsoNormal style="MARGIN-LEFT: 18pt"><SPAN 
style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'">根据实际情况，我们得到一下情况：</SPAN></P>
<P class=MsoNormal 
style="MARGIN-LEFT: 60pt; TEXT-INDENT: -18pt; mso-list: l1 level3 lfo2; tab-stops: list 60.0pt"><![if !supportLists]><SPAN 
lang=EN-US style="mso-fareast-font-family: 'Times New Roman'"><SPAN 
style="mso-list: Ignore">(一)</SPAN></SPAN><![endif]><SPAN 
style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'">教师任课流程：</SPAN></P>
<P class=MsoNormal style="MARGIN-LEFT: 42pt"><SPAN 
lang=EN-US><o:p>&nbsp;</o:p></SPAN></P>
<P class=MsoNormal style="MARGIN-LEFT: 42pt"><SPAN 
lang=EN-US><o:p>&nbsp;</o:p></SPAN></P>
<P class=MsoNormal style="MARGIN-LEFT: 42pt"><!--[if gte vml 1]><v:group 
id=_x0000_s1268 
style="MARGIN-TOP: 0px; Z-INDEX: 6; LEFT: 0px; MARGIN-LEFT: 27pt; WIDTH: 5in; POSITION: absolute; HEIGHT: 202.8pt; TEXT-ALIGN: left" 
coordsize = "7200,4056" coordorigin = "1980,8460"><v:group id=_x0000_s1260 
style="LEFT: 1980px; WIDTH: 7200px; POSITION: absolute; TOP: 8460px; HEIGHT: 4056px" 
coordsize = "7200,4056" coordorigin = "1980,8460"><v:rect id=_x0000_s1232 
style="LEFT: 1980px; WIDTH: 1980px; POSITION: absolute; TOP: 8928px; HEIGHT: 1092px" 
coordsize = "21600,21600" o:regroupid = "13"><v:textbox 
style="MARGIN-TOP: 4.843pt; LEFT: auto; MARGIN-LEFT: 8.312pt; WIDTH: 83.875pt; TOP: auto; HEIGHT: 46.656pt; mso-next-textbox: #_x0000_s1232"><![if !mso]>
<TABLE cellSpacing=0 cellPadding=0 width="100%">
  <TBODY>
  <TR>
    <TD><![endif]>
      <DIV>
      <P class=MsoNormal><SPAN 
      style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'">教务处根据各专业情况下达下学期教学任务</SPAN></P></DIV><![if !mso]></TD></TR></TBODY></TABLE><![endif]></v:textbox></v:rect><v:rect 
id=_x0000_s1234 
style="LEFT: 4140px; WIDTH: 1080px; POSITION: absolute; TOP: 8928px; HEIGHT: 1092px" 
coordsize = "21600,21600" o:regroupid = "18" strokecolor = "white"><v:textbox 
style="MARGIN-TOP: 4.843pt; LEFT: auto; MARGIN-LEFT: 8.312pt; WIDTH: 38.875pt; TOP: auto; HEIGHT: 46.656pt; mso-next-textbox: #_x0000_s1234"><![if !mso]>
<TABLE cellSpacing=0 cellPadding=0 width="100%">
  <TBODY>
  <TR>
    <TD><![endif]>
      <DIV>
      <P class=MsoNormal><SPAN 
      style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'">下学期</SPAN></P>
      <P class=MsoNormal><SPAN 
      style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'">各专业</SPAN></P>
      <P class=MsoNormal><SPAN 
      style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'">课程</SPAN></P></DIV><![if !mso]></TD></TR></TBODY></TABLE><![endif]></v:textbox></v:rect><v:rect 
id=_x0000_s1235 
style="LEFT: 5220px; WIDTH: 1080px; POSITION: absolute; TOP: 8772px; HEIGHT: 1404px" 
coordsize = "21600,21600" o:regroupid = "13"><v:textbox 
style="MARGIN-TOP: 4.562pt; LEFT: auto; MARGIN-LEFT: 8.312pt; WIDTH: 38.875pt; TOP: auto; HEIGHT: 62.25pt; mso-next-textbox: #_x0000_s1235"><![if !mso]>
<TABLE cellSpacing=0 cellPadding=0 width="100%">
  <TBODY>
  <TR>
    <TD><![endif]>
      <DIV>
      <P class=MsoNormal><SPAN 
      style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'">教研室</SPAN></P>
      <P class=MsoNormal><SPAN 
      style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'">协商安</SPAN></P>
      <P class=MsoNormal><SPAN 
      style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'">排教学</SPAN></P>
      <P class=MsoNormal><SPAN 
      style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'">任务</SPAN></P></DIV><![if !mso]></TD></TR></TBODY></TABLE><![endif]></v:textbox></v:rect><v:rect 
id=_x0000_s1237 
style="LEFT: 6480px; WIDTH: 1080px; POSITION: absolute; TOP: 8928px; HEIGHT: 1092px" 
coordsize = "21600,21600" o:regroupid = "14" strokecolor = "white"><v:textbox 
style="MARGIN-TOP: 4.843pt; LEFT: auto; MARGIN-LEFT: 8.312pt; WIDTH: 38.875pt; TOP: auto; HEIGHT: 46.656pt; mso-next-textbox: #_x0000_s1237"><![if !mso]>
<TABLE cellSpacing=0 cellPadding=0 width="100%">
  <TBODY>
  <TR>
    <TD><![endif]>
      <DIV>
      <P class=MsoNormal><SPAN 
      style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'">填写好</SPAN></P>
      <P class=MsoNormal><SPAN 
      style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'">的课程</SPAN></P>
      <P class=MsoNormal><SPAN 
      style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'">申请表</SPAN></P></DIV><![if !mso]></TD></TR></TBODY></TABLE><![endif]></v:textbox></v:rect><v:rect 
id=_x0000_s1240 
style="LEFT: 6120px; WIDTH: 1440px; POSITION: absolute; TOP: 10800px; HEIGHT: 1716px" 
coordsize = "21600,21600" o:regroupid = "13"><v:textbox 
style="MARGIN-TOP: 4.687pt; LEFT: auto; MARGIN-LEFT: 8.312pt; WIDTH: 56.875pt; TOP: auto; HEIGHT: 77.875pt; mso-next-textbox: #_x0000_s1240"><![if !mso]>
<TABLE cellSpacing=0 cellPadding=0 width="100%">
  <TBODY>
  <TR>
    <TD><![endif]>
      <DIV>
      <P class=MsoNormal><SPAN lang=EN-US>1</SPAN><SPAN 
      style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'">各系将课程表交给教师</SPAN></P>
      <P class=MsoNormal><SPAN lang=EN-US>2</SPAN><SPAN 
      style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'">安排好教室和时间。</SPAN></P></DIV><![if !mso]></TD></TR></TBODY></TABLE><![endif]></v:textbox></v:rect><v:rect 
id=_x0000_s1238 
style="LEFT: 7740px; WIDTH: 1440px; POSITION: absolute; TOP: 8460px; HEIGHT: 2028px" 
coordsize = "21600,21600" o:regroupid = "15"><v:textbox 
style="MARGIN-TOP: 4.718pt; LEFT: auto; MARGIN-LEFT: 8.312pt; WIDTH: 56.875pt; TOP: auto; HEIGHT: 93.437pt; mso-next-textbox: #_x0000_s1238"><![if !mso]>
<TABLE cellSpacing=0 cellPadding=0 width="100%">
  <TBODY>
  <TR>
    <TD><![endif]>
      <DIV>
      <P class=MsoNormal><SPAN 
      style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'">教务处根据各专业情况交来的课程</SPAN></P>
      <P class=MsoNormal><SPAN 
      style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'">数据，安排教室和时间。</SPAN></P></DIV><![if !mso]></TD></TR></TBODY></TABLE><![endif]></v:textbox></v:rect><v:rect 
id=_x0000_s1239 
style="LEFT: 7740px; WIDTH: 1080px; POSITION: absolute; TOP: 10644px; HEIGHT: 1092px" 
coordsize = "21600,21600" o:regroupid = "17" strokecolor = "white"><v:textbox 
style="MARGIN-TOP: 4.406pt; LEFT: auto; MARGIN-LEFT: 8.312pt; WIDTH: 38.875pt; TOP: auto; HEIGHT: 46.656pt; mso-next-textbox: #_x0000_s1239"><![if !mso]>
<TABLE cellSpacing=0 cellPadding=0 width="100%">
  <TBODY>
  <TR>
    <TD><![endif]>
      <DIV>
      <P class=MsoNormal><SPAN 
      style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'">安排好</SPAN></P>
      <P class=MsoNormal><SPAN 
      style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'">的课程</SPAN></P>
      <P class=MsoNormal><SPAN 
      style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'">表</SPAN></P></DIV><![if !mso]></TD></TR></TBODY></TABLE><![endif]></v:textbox></v:rect><v:rect 
id=_x0000_s1245 
style="LEFT: 3600px; WIDTH: 1080px; POSITION: absolute; TOP: 10956px; HEIGHT: 1248px" 
coordsize = "21600,21600" o:regroupid = "13"><v:textbox 
style="MARGIN-TOP: 5pt; LEFT: auto; MARGIN-LEFT: 8.312pt; WIDTH: 38.875pt; TOP: auto; HEIGHT: 54.437pt; mso-next-textbox: #_x0000_s1245"><![if !mso]>
<TABLE cellSpacing=0 cellPadding=0 width="100%">
  <TBODY>
  <TR>
    <TD><![endif]>
      <DIV>
      <P class=MsoNormal><SPAN 
      style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'">教师按照课程表上课</SPAN></P></DIV><![if !mso]></TD></TR></TBODY></TABLE><![endif]></v:textbox></v:rect><v:rect 
id=_x0000_s1244 
style="LEFT: 4860px; WIDTH: 1080px; POSITION: absolute; TOP: 11112px; HEIGHT: 540px" 
coordsize = "21600,21600" o:regroupid = "16" strokecolor = "white"><v:textbox 
style="MARGIN-TOP: 4.531pt; LEFT: auto; MARGIN-LEFT: 8.312pt; WIDTH: 38.875pt; TOP: auto; HEIGHT: 19.062pt; mso-next-textbox: #_x0000_s1244"><![if !mso]>
<TABLE cellSpacing=0 cellPadding=0 width="100%">
  <TBODY>
  <TR>
    <TD><![endif]>
      <DIV>
      <P class=MsoNormal><SPAN 
      style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'">课程表</SPAN></P></DIV><![if !mso]></TD></TR></TBODY></TABLE><![endif]></v:textbox></v:rect></v:group><v:line 
id=_x0000_s1261 style="POSITION: absolute" from = "3960,9240" to = 
"5220,9240"><v:stroke endarrow = "block"></v:stroke></v:line><v:line 
id=_x0000_s1262 style="POSITION: absolute" from = "6300,9240" to = 
"7740,9240"><v:stroke endarrow = "block"></v:stroke></v:line><v:line 
id=_x0000_s1263 style="POSITION: absolute" from = "8820,10488" to = 
"8820,11892"></v:line><v:line id=_x0000_s1264 
style="POSITION: absolute; flip: x" from = "7560,11892" to = 
"8820,11892"><v:stroke endarrow = "block"></v:stroke></v:line><v:line 
id=_x0000_s1265 style="POSITION: absolute; flip: x" from = "4680,11580" to = 
"6120,11580"><v:stroke endarrow = "block"></v:stroke></v:line></v:group><![endif]--><![if !vml]><span style='mso-ignore:vglayout;
position:relative;z-index:6;left:35px;top:-1px;width:486px;height:276px'><img
width=486 height=276 src="如何画数据库ER图.files/image001.gif" v:shapes="_x0000_s1268 _x0000_s1260 _x0000_s1232 _x0000_s1234 _x0000_s1235 _x0000_s1237 _x0000_s1240 _x0000_s1238 _x0000_s1239 _x0000_s1245 _x0000_s1244 _x0000_s1261 _x0000_s1262 _x0000_s1263 _x0000_s1264 _x0000_s1265"></span><![endif]><SPAN 
lang=EN-US><o:p>&nbsp;</o:p></SPAN></P>
<P class=MsoNormal style="MARGIN-LEFT: 42pt"><SPAN 
lang=EN-US><o:p>&nbsp;</o:p></SPAN></P>
<P class=MsoNormal style="MARGIN-LEFT: 42pt"><SPAN 
lang=EN-US><o:p>&nbsp;</o:p></SPAN></P>
<P class=MsoNormal style="MARGIN-LEFT: 21pt"><SPAN 
lang=EN-US><o:p>&nbsp;</o:p></SPAN></P>
<P class=MsoNormal style="MARGIN-LEFT: 21pt"><SPAN 
lang=EN-US><o:p>&nbsp;</o:p></SPAN></P>
<P class=MsoNormal style="MARGIN-LEFT: 21pt"><SPAN 
lang=EN-US><o:p>&nbsp;</o:p></SPAN></P>
<P class=MsoNormal style="MARGIN-LEFT: 21pt"><SPAN 
lang=EN-US><o:p>&nbsp;</o:p></SPAN></P>
<P class=MsoNormal style="MARGIN-LEFT: 21pt"><SPAN 
lang=EN-US><o:p>&nbsp;</o:p></SPAN></P>
<P class=MsoNormal style="MARGIN-LEFT: 21pt"><SPAN 
lang=EN-US><o:p>&nbsp;</o:p></SPAN></P>
<P class=MsoNormal style="MARGIN-LEFT: 21pt"><SPAN 
lang=EN-US><o:p>&nbsp;</o:p></SPAN></P>
<P class=MsoNormal style="MARGIN-LEFT: 21pt"><SPAN 
lang=EN-US><o:p>&nbsp;</o:p></SPAN></P>
<P class=MsoNormal style="MARGIN-LEFT: 21pt"><SPAN 
lang=EN-US><o:p>&nbsp;</o:p></SPAN></P>
<P class=MsoNormal style="MARGIN-LEFT: 21pt"><SPAN 
lang=EN-US><o:p>&nbsp;</o:p></SPAN></P>
<P class=MsoNormal style="MARGIN-LEFT: 21pt"><SPAN 
lang=EN-US><o:p>&nbsp;</o:p></SPAN></P>
<P class=MsoNormal style="MARGIN-LEFT: 21pt"><SPAN 
lang=EN-US><o:p>&nbsp;</o:p></SPAN></P>
<P class=MsoNormal style="MARGIN-LEFT: 21pt"><SPAN 
lang=EN-US><o:p>&nbsp;</o:p></SPAN></P>
<P class=MsoNormal style="MARGIN-LEFT: 21pt"><SPAN 
lang=EN-US><o:p>&nbsp;</o:p></SPAN></P>
<P class=MsoNormal style="MARGIN-LEFT: 21pt"><SPAN 
lang=EN-US><o:p>&nbsp;</o:p></SPAN></P>
<P class=MsoNormal style="MARGIN-LEFT: 21pt"><SPAN 
lang=EN-US><o:p>&nbsp;</o:p></SPAN></P>
<P class=MsoNormal style="MARGIN-LEFT: 21pt"><SPAN 
lang=EN-US><o:p>&nbsp;</o:p></SPAN></P><BR style="mso-ignore: vglayout" 
clear=all>
<P class=MsoNormal style="MARGIN-LEFT: 21pt"><SPAN lang=EN-US>(</SPAN><SPAN 
style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'">二</SPAN><SPAN 
lang=EN-US>)</SPAN><SPAN 
style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'">学生选择课程流程：</SPAN></P>
<P class=MsoNormal style="MARGIN-LEFT: 21pt"><!--[if gte vml 1]><v:group 
id=_x0000_s1285 
style="MARGIN-TOP: 7.8pt; Z-INDEX: 7; LEFT: 0px; MARGIN-LEFT: 27pt; WIDTH: 351pt; POSITION: absolute; HEIGHT: 171.6pt; TEXT-ALIGN: left" 
coordsize = "7020,3432" coordorigin = "1980,12360"><v:rect id=_x0000_s1271 
style="LEFT: 1980px; WIDTH: 1980px; POSITION: absolute; TOP: 12516px; HEIGHT: 1092px" 
coordsize = "21600,21600" o:regroupid = "20"><v:textbox 
style="MARGIN-TOP: 4.531pt; LEFT: auto; MARGIN-LEFT: 8.312pt; WIDTH: 83.875pt; TOP: auto; HEIGHT: 46.656pt; mso-next-textbox: #_x0000_s1271"><![if !mso]>
<TABLE cellSpacing=0 cellPadding=0 width="100%">
  <TBODY>
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