n层设计基础续.htm

UML软件工程组织面向对象实例文档 内涵GIF 图片和网络文件格式

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<P class=MsoNormal><I style="mso-bidi-font-style: normal"><SPAN 
style="FONT-FAMILY: 宋体; LETTER-SPACING: 0.3pt; mso-fareast-language: ZH-CN; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">图</SPAN><SPAN 
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style="FONT-FAMILY: 宋体; LETTER-SPACING: 0.3pt; mso-fareast-language: ZH-CN; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">的初步修正</SPAN></I><SPAN 
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<P class=MsoNormal><SPAN lang=EN-US 
style="LETTER-SPACING: 0.3pt; mso-fareast-font-family: 宋体; mso-fareast-language: ZH-CN; mso-spacerun: yes">&nbsp;&nbsp;&nbsp; 
</SPAN><SPAN 
style="FONT-FAMILY: 宋体; LETTER-SPACING: 0.3pt; mso-fareast-language: ZH-CN; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">将原来的</SPAN><SPAN 
lang=EN-US 
style="LETTER-SPACING: 0.3pt; mso-fareast-font-family: 宋体; mso-fareast-language: ZH-CN">Account</SPAN><SPAN 
style="FONT-FAMILY: 宋体; LETTER-SPACING: 0.3pt; mso-fareast-language: ZH-CN; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">改名为</SPAN><SPAN 
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style="LETTER-SPACING: 0.3pt; mso-fareast-font-family: 宋体; mso-fareast-language: ZH-CN">AccPersist</SPAN><SPAN 
style="FONT-FAMILY: 宋体; LETTER-SPACING: 0.3pt; mso-fareast-language: ZH-CN; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">会更明显表示出其负责存取数据库的角色。将原来的</SPAN><SPAN 
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style="LETTER-SPACING: 0.3pt; mso-fareast-font-family: 宋体; mso-fareast-language: ZH-CN">AccounX</SPAN><SPAN 
style="FONT-FAMILY: 宋体; LETTER-SPACING: 0.3pt; mso-fareast-language: ZH-CN; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">改名为</SPAN><SPAN 
lang=EN-US 
style="LETTER-SPACING: 0.3pt; mso-fareast-font-family: 宋体; mso-fareast-language: ZH-CN">Account</SPAN><SPAN 
style="FONT-FAMILY: 宋体; LETTER-SPACING: 0.3pt; mso-fareast-language: ZH-CN; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">更明确对应到企业领域</SPAN><SPAN 
lang=EN-US 
style="LETTER-SPACING: 0.3pt; mso-fareast-font-family: 宋体; mso-fareast-language: ZH-CN">(domain)</SPAN><SPAN 
style="FONT-FAMILY: 宋体; LETTER-SPACING: 0.3pt; mso-fareast-language: ZH-CN; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">里的「帐户」概念</SPAN><SPAN 
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style="LETTER-SPACING: 0.3pt; mso-fareast-font-family: 宋体; mso-fareast-language: ZH-CN">(concept)</SPAN><SPAN 
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<P class=MsoNormal><SPAN lang=EN-US 
style="LETTER-SPACING: 0.3pt; mso-fareast-font-family: 宋体; mso-fareast-language: ZH-CN; mso-spacerun: yes">&nbsp;&nbsp;&nbsp; 
</SPAN><SPAN 
style="FONT-FAMILY: 宋体; LETTER-SPACING: 0.3pt; mso-fareast-language: ZH-CN; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">这样的名称改变，表示观点</SPAN><SPAN 
lang=EN-US 
style="LETTER-SPACING: 0.3pt; mso-fareast-font-family: 宋体; mso-fareast-language: ZH-CN">(view)</SPAN><SPAN 
style="FONT-FAMILY: 宋体; LETTER-SPACING: 0.3pt; mso-fareast-language: ZH-CN; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">有所改变。在原来的<SPAN 
style="mso-font-kerning: 8.0pt">模式</SPAN></SPAN><SPAN lang=EN-US 
style="FONT-FAMILY: Monotype Sorts; LETTER-SPACING: 0.3pt; mso-font-kerning: 8.0pt; mso-ascii-font-family: Times New Roman; mso-hansi-font-family: Times New Roman; mso-char-type: symbol; mso-symbol-font-family: Monotype Sorts">&sup1;</SPAN><SPAN 
style="FONT-FAMILY: 宋体; LETTER-SPACING: 0.3pt; mso-font-kerning: 8.0pt; mso-fareast-language: ZH-CN; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">里，</SPAN><SPAN 
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style="LETTER-SPACING: 0.3pt; mso-fareast-font-family: 宋体; mso-fareast-language: ZH-CN">persist</SPAN><SPAN 
style="FONT-FAMILY: 宋体; LETTER-SPACING: 0.3pt; mso-fareast-language: ZH-CN; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">对象取名为</SPAN><SPAN 
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style="LETTER-SPACING: 0.3pt; mso-fareast-font-family: 宋体; mso-fareast-language: ZH-CN">Account</SPAN><SPAN 
style="FONT-FAMILY: 宋体; LETTER-SPACING: 0.3pt; mso-fareast-language: ZH-CN; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">，就意味着以</SPAN><SPAN 
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style="LETTER-SPACING: 0.3pt; mso-fareast-font-family: 宋体; mso-fareast-language: ZH-CN">persist</SPAN><SPAN 
style="FONT-FAMILY: 宋体; LETTER-SPACING: 0.3pt; mso-fareast-language: ZH-CN; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">对象为重心。企业对象</SPAN><SPAN 
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style="LETTER-SPACING: 0.3pt; mso-fareast-font-family: 宋体; mso-fareast-language: ZH-CN">(business 
object) ----- AccountX</SPAN><SPAN 
style="FONT-FAMILY: 宋体; LETTER-SPACING: 0.3pt; mso-fareast-language: ZH-CN; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">与</SPAN><SPAN 
lang=EN-US 
style="LETTER-SPACING: 0.3pt; mso-fareast-font-family: 宋体; mso-fareast-language: ZH-CN">DB</SPAN><SPAN 
style="FONT-FAMILY: 宋体; LETTER-SPACING: 0.3pt; mso-fareast-language: ZH-CN; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">表格只是担任辅佐</SPAN><SPAN 
lang=EN-US 
style="LETTER-SPACING: 0.3pt; mso-fareast-font-family: 宋体; mso-fareast-language: ZH-CN">persist</SPAN><SPAN 
style="FONT-FAMILY: 宋体; LETTER-SPACING: 0.3pt; mso-fareast-language: ZH-CN; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">对象，替</SPAN><SPAN 
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style="LETTER-SPACING: 0.3pt; mso-fareast-font-family: 宋体; mso-fareast-language: ZH-CN">persist</SPAN><SPAN 
style="FONT-FAMILY: 宋体; LETTER-SPACING: 0.3pt; mso-fareast-language: ZH-CN; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">对象保管其状态值</SPAN><SPAN 
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style="LETTER-SPACING: 0.3pt; mso-fareast-font-family: 宋体; mso-fareast-language: ZH-CN">(state)</SPAN><SPAN 
style="FONT-FAMILY: 宋体; LETTER-SPACING: 0.3pt; mso-fareast-language: ZH-CN; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">罢了。</SPAN><SPAN 
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<P class=MsoNormal><SPAN lang=EN-US 
style="LETTER-SPACING: 0.3pt; mso-fareast-font-family: 宋体; mso-fareast-language: ZH-CN; mso-spacerun: yes">&nbsp;&nbsp;&nbsp; 
</SPAN><SPAN 
style="FONT-FAMILY: 宋体; LETTER-SPACING: 0.3pt; mso-fareast-language: ZH-CN; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">现在将企业对象改名为</SPAN><SPAN 
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style="LETTER-SPACING: 0.3pt; mso-fareast-font-family: 宋体; mso-fareast-language: ZH-CN">Account</SPAN><SPAN 
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style="LETTER-SPACING: 0.3pt; mso-fareast-font-family: 宋体; mso-fareast-language: ZH-CN">persist</SPAN><SPAN 
style="FONT-FAMILY: 宋体; LETTER-SPACING: 0.3pt; mso-fareast-language: ZH-CN; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">对象只是把企业对象的状态存入</SPAN><SPAN 
lang=EN-US 
style="LETTER-SPACING: 0.3pt; mso-fareast-font-family: 宋体; mso-fareast-language: ZH-CN">DB</SPAN><SPAN 
style="FONT-FAMILY: 宋体; LETTER-SPACING: 0.3pt; mso-fareast-language: ZH-CN; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">表格里而已。因此</SPAN><SPAN 
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style="LETTER-SPACING: 0.3pt; mso-fareast-font-family: 宋体; mso-fareast-language: ZH-CN">persist</SPAN><SPAN 
style="FONT-FAMILY: 宋体; LETTER-SPACING: 0.3pt; mso-fareast-language: ZH-CN; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">对象是反过来辅佐企业对象的。</SPAN><SPAN 
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<P class=MsoNormal style="MARGIN-BOTTOM: 6pt"><B 
style="mso-bidi-font-weight: normal"><I 
style="mso-bidi-font-style: normal"><SPAN 
style="FONT-SIZE: 18pt; FONT-FAMILY: 宋体; LETTER-SPACING: 0.3pt; mso-bidi-font-size: 10.0pt; mso-fareast-language: ZH-CN; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">进阶模式</SPAN></I></B><B 
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style="FONT-SIZE: 18pt; FONT-FAMILY: Monotype Sorts; LETTER-SPACING: 0.3pt; mso-bidi-font-size: 10.0pt; mso-ascii-font-family: Times New Roman; mso-hansi-font-family: Times New Roman; mso-char-type: symbol; mso-symbol-font-family: Monotype Sorts">&raquo;</SPAN></I></B><SPAN 
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<P class=MsoNormal><U><SPAN 
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style="FONT-SIZE: 12pt; LETTER-SPACING: 0.3pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 宋体; mso-fareast-language: ZH-CN">stateful</SPAN><SPAN 
style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; LETTER-SPACING: 0.3pt; mso-bidi-font-size: 10.0pt; mso-fareast-language: ZH-CN; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">对象</SPAN></U><SPAN 
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