{"id":89,"date":"2025-03-21T15:37:52","date_gmt":"2025-03-21T07:37:52","guid":{"rendered":"https:\/\/zd1269878.noblogs.org\/?p=89"},"modified":"2025-10-21T10:32:31","modified_gmt":"2025-10-21T02:32:31","slug":"%e6%95%b0%e6%8d%ae%e5%ba%93%e5%8e%9f%e7%90%86-%e7%ac%ac%e4%ba%8c%e7%ab%a0-ppt%e6%95%b4%e7%90%86","status":"publish","type":"post","link":"https:\/\/zd1269878.noblogs.org\/en-US\/post\/2025\/03\/21\/%e6%95%b0%e6%8d%ae%e5%ba%93%e5%8e%9f%e7%90%86-%e7%ac%ac%e4%ba%8c%e7%ab%a0-ppt%e6%95%b4%e7%90%86\/","title":{"rendered":"\u6570\u636e\u5e93\u539f\u7406-\u7b2c\u4e8c\u7ae0-PPT\u6574\u7406"},"content":{"rendered":"

—<\/p>\n

1. \u6570\u636e\u6a21\u578b\u6982\u8ff0<\/strong><\/em>
\n– \u6570\u636e\u6a21\u578b<\/strong>\uff1a\u63cf\u8ff0\u73b0\u5b9e\u4e16\u754c\u6570\u636e\u7279\u5f81\u7684\u62bd\u8c61\u5de5\u5177\uff0c\u9700\u6ee1\u8db3\uff1a
\n– \u771f\u5b9e\u6a21\u62df\u73b0\u5b9e\u4e16\u754c
\n– \u6613\u4e8e\u7406\u89e3
\n– \u4fbf\u4e8e\u8ba1\u7b97\u673a\u5b9e\u73b0
\n– \u6570\u636e\u62bd\u8c61\u8fc7\u7a0b<\/strong>\uff1a
\n– \u73b0\u5b9e\u4e16\u754c<\/strong> \u2192 \u4fe1\u606f\u4e16\u754c<\/strong>\uff08\u6982\u5ff5\u6a21\u578b\uff0c\u5982E-R\u6a21\u578b\uff09 \u2192 \u6570\u636e\u4e16\u754c<\/strong>\uff08\u903b\u8f91\u6a21\u578b\uff0c\u5982\u5173\u7cfb\u6a21\u578b\uff09 \u2192 \u8ba1\u7b97\u673a\u4e16\u754c<\/strong>\uff08\u7269\u7406\u6a21\u578b\uff09\u3002<\/p>\n

—<\/p>\n

2. \u6982\u5ff5\u6a21\u578b\uff08E-R\u6a21\u578b\uff09<\/strong><\/em>
\n\u6838\u5fc3\u8981\u7d20<\/strong><\/em>
\n– \u5b9e\u4f53\uff08Entity\uff09<\/strong>\uff1a\u5ba2\u89c2\u5b58\u5728\u7684\u4e8b\u7269\uff08\u5982\u5b66\u751f\u3001\u8bfe\u7a0b\uff09\u3002
\n– \u5c5e\u6027\uff08Attribute\uff09<\/strong>\uff1a\u5b9e\u4f53\u7684\u7279\u5f81\uff08\u5982\u5b66\u53f7\u3001\u59d3\u540d\uff09\u3002
\n– \u7801\uff08Key\uff09<\/strong>\uff1a\u552f\u4e00\u6807\u8bc6\u5b9e\u4f53\u7684\u5c5e\u6027\u6216\u5c5e\u6027\u7ec4\u3002
\n– \u57df\uff08Domain\uff09<\/strong>\uff1a\u5c5e\u6027\u7684\u53d6\u503c\u8303\u56f4\u3002
\n– \u8054\u7cfb\uff08Relationship\uff09<\/strong>\uff1a\u5b9e\u4f53\u95f4\u7684\u5173\u8054\uff0c\u5206\u4e3a\uff1a
\n– 1:1<\/strong>\uff08\u4e00\u5bf9\u4e00\uff09
\n– 1:N<\/strong>\uff08\u4e00\u5bf9\u591a\uff09
\n– M:N<\/strong>\uff08\u591a\u5bf9\u591a\uff09<\/p>\n

E-R\u56fe\u8868\u793a\u6cd5\uff08Chen\u65b9\u6cd5\uff09<\/strong><\/em>
\n– \u5b9e\u4f53<\/strong>\uff1a\u77e9\u5f62\u6846\uff08\u5982 `\u5b66\u751f`\uff09\u3002
\n– \u5c5e\u6027<\/strong>\uff1a\u692d\u5706\u6846\uff08\u5982 `\u5b66\u53f7`\uff09\u3002
\n– \u8054\u7cfb<\/strong>\uff1a\u83f1\u5f62\u6846\uff08\u5982 `\u9009\u4fee`\uff09\u3002
\n– \u5f31\u5b9e\u4f53<\/strong>\uff1a\u53cc\u77e9\u5f62\u6846\uff0c\u4f9d\u8d56\u5f3a\u5b9e\u4f53\u5b58\u5728\u3002<\/p>\n

\u8bbe\u8ba1\u6b65\u9aa4<\/strong><\/em>
\n1. \u786e\u5b9a\u5b9e\u4f53\u53ca\u5c5e\u6027\u3002
\n2. \u786e\u5b9a\u5b9e\u4f53\u95f4\u7684\u8054\u7cfb\u7c7b\u578b\u3002
\n3. \u7ed8\u5236E-R\u56fe\uff0c\u6807\u660e\u4e3b\u7801\u548c\u8054\u7cfb\u591a\u6837\u6027\u3002<\/p>\n

—<\/p>\n

3. \u6570\u636e\u6a21\u578b\u5206\u7c7b<\/strong><\/em>
\n– \u6982\u5ff5\u6a21\u578b<\/strong>\uff1a\u7528\u6237\u89c6\u89d2\u7684\u62bd\u8c61\uff08\u5982E-R\u6a21\u578b\uff09\u3002
\n– \u903b\u8f91\u6a21\u578b<\/strong>\uff1a\u8ba1\u7b97\u673a\u89c6\u89d2\u7684\u62bd\u8c61\uff0c\u5305\u62ec\uff1a
\n– \u5c42\u6b21\u6a21\u578b<\/strong>\uff08\u6811\u5f62\u7ed3\u6784\uff09
\n– \u7f51\u72b6\u6a21\u578b<\/strong>\uff08\u56fe\u7ed3\u6784\uff09
\n– \u5173\u7cfb\u6a21\u578b<\/strong>\uff08\u4e8c\u7ef4\u8868\uff0c\u4e3b\u6d41\u6a21\u578b\uff09
\n– \u9762\u5411\u5bf9\u8c61\u6a21\u578b<\/strong>\uff08\u5bf9\u8c61\u4e0e\u884c\u4e3a\u7ed3\u5408\uff09
\n– \u7269\u7406\u6a21\u578b<\/strong>\uff1a\u6570\u636e\u5728\u5b58\u50a8\u4ecb\u8d28\u4e0a\u7684\u7ec4\u7ec7\u65b9\u5f0f\uff08\u5982\u7d22\u5f15\u3001\u805a\u7c07\uff09\u3002<\/p>\n

—<\/p>\n

4. \u5173\u7cfb\u6a21\u578b<\/strong><\/em><\/h3>\n

\u57fa\u672c\u6982\u5ff5<\/strong><\/em>
\n– \u5173\u7cfb\uff08\u8868\uff09<\/strong>\uff1a\u7531\u884c\uff08\u5143\u7ec4\uff09\u548c\u5217\uff08\u5c5e\u6027\uff09\u7ec4\u6210\u3002
\n– \u5173\u7cfb\u6a21\u5f0f<\/strong>\uff1a\u8868\u7684\u7ed3\u6784\u5b9a\u4e49\uff08\u5982 `\u5b66\u751f(\u5b66\u53f7, \u59d3\u540d, \u6027\u522b)`\uff09\u3002
\n– \u4e3b\u7801\uff08Primary Key\uff09<\/strong>\uff1a\u552f\u4e00\u6807\u8bc6\u5143\u7ec4\u7684\u5c5e\u6027\u3002
\n– \u5916\u7801\uff08Foreign Key\uff09<\/strong>\uff1a\u5f15\u7528\u5176\u4ed6\u8868\u7684\u4e3b\u7801\u3002<\/p>\n

\u5b8c\u6574\u6027\u7ea6\u675f<\/strong><\/em>
\n1. \u5b9e\u4f53\u5b8c\u6574\u6027<\/strong>\uff1a\u4e3b\u7801\u5c5e\u6027\u4e0d\u80fd\u4e3a\u7a7a\u3002
\n2. \u53c2\u7167\u5b8c\u6574\u6027<\/strong>\uff1a\u5916\u7801\u503c\u5fc5\u987b\u5f15\u7528\u5b58\u5728\u7684\u4e3b\u7801\u503c\u6216\u4e3a\u7a7a\u3002
\n3. \u7528\u6237\u5b9a\u4e49\u5b8c\u6574\u6027<\/strong>\uff1a\u4e1a\u52a1\u89c4\u5219\u7ea6\u675f\uff08\u5982\u5e74\u9f84\u226515\uff09\u3002<\/p>\n

\u5173\u7cfb\u6a21\u578b\u4f18\u70b9<\/strong><\/em>
\n– \u7ed3\u6784\u7b80\u5355\uff08\u4e8c\u7ef4\u8868\uff09\u3002
\n– \u4e25\u683c\u7684\u6570\u5b66\u7406\u8bba\u57fa\u7840\uff08\u96c6\u5408\u8bba\u3001\u5173\u7cfb\u4ee3\u6570\uff09\u3002
\n– \u652f\u6301\u9ad8\u6548\u67e5\u8be2\u4f18\u5316\u3002<\/p>\n

—<\/p>\n

5. E-R\u6a21\u578b\u5411\u5173\u7cfb\u6a21\u578b\u7684\u8f6c\u6362\u89c4\u5219<\/strong><\/em>
\n1. \u5b9e\u4f53\u8f6c\u6362<\/strong>\uff1a\u6bcf\u4e2a\u5b9e\u4f53\u8f6c\u4e3a\u4e00\u4e2a\u5173\u7cfb\u6a21\u5f0f\uff0c\u4e3b\u7801\u4e3a\u5b9e\u4f53\u4e3b\u7801\u3002
\n– \u4f8b\uff1a`\u5b66\u751f(\u5b66\u53f7, \u59d3\u540d, \u6027\u522b)`\u3002
\n2. \u8054\u7cfb\u8f6c\u6362<\/strong>\uff1a
\n– 1:1\u8054\u7cfb<\/strong>\uff1a\u53ef\u5408\u5e76\u5230\u4efb\u4e00\u5b9e\u4f53\u7684\u5173\u7cfb\u6a21\u5f0f\u4e2d\u3002
\n– 1:N\u8054\u7cfb<\/strong>\uff1a\u5c061\u7aef\u4e3b\u7801\u52a0\u5165N\u7aef\u5173\u7cfb\u6a21\u5f0f\u3002
\n– \u4f8b\uff1a`\u73ed\u7ea7(\u73ed\u7ea7\u53f7, \u73ed\u4e3b\u4efb)` \u2192 \u5408\u5e76\u5230 `\u5b66\u751f(\u5b66\u53f7, …, \u73ed\u7ea7\u53f7)`\u3002
\n– M:N\u8054\u7cfb<\/strong>\uff1a\u72ec\u7acb\u4e3a\u65b0\u5173\u7cfb\u6a21\u5f0f\uff0c\u4e3b\u7801\u4e3a\u4e24\u7aef\u4e3b\u7801\u7ec4\u5408\u3002
\n– \u4f8b\uff1a`\u9009\u4fee(\u5b66\u53f7, \u8bfe\u7a0b\u53f7, \u6210\u7ee9)`\u3002
\n3. \u591a\u5143\u8054\u7cfb<\/strong>\uff1a\u72ec\u7acb\u4e3a\u65b0\u5173\u7cfb\u6a21\u5f0f\uff0c\u4e3b\u7801\u4e3a\u6240\u6709\u53c2\u4e0e\u5b9e\u4f53\u4e3b\u7801\u7ec4\u5408\u3002
\n4. \u5f31\u5b9e\u4f53<\/strong>\uff1a\u4e3b\u7801\u5305\u542b\u5f3a\u5b9e\u4f53\u4e3b\u7801\u53ca\u81ea\u8eab\u90e8\u5206\u5c5e\u6027\u3002<\/p>\n

—<\/p>\n

6. \u5173\u952e\u603b\u7ed3<\/strong><\/em>
\n– E-R\u6a21\u578b<\/strong>\u662f\u6570\u636e\u5e93\u8bbe\u8ba1\u7684\u6838\u5fc3\u5de5\u5177\uff0c\u9700\u6e05\u6670\u8868\u8fbe\u5b9e\u4f53\u3001\u5c5e\u6027\u53ca\u8054\u7cfb\u3002
\n– \u5173\u7cfb\u6a21\u578b<\/strong>\u901a\u8fc7\u4e8c\u7ef4\u8868\u5b9e\u73b0\u6570\u636e\u5b58\u50a8\uff0c\u4f9d\u8d56\u4e09\u7c7b\u5b8c\u6574\u6027\u7ea6\u675f\u4fdd\u8bc1\u6570\u636e\u4e00\u81f4\u6027\u3002
\n– \u8f6c\u6362\u89c4\u5219<\/strong>\u662fE-R\u56fe\u5230\u5173\u7cfb\u8868\u6620\u5c04\u7684\u5173\u952e\uff0c\u76f4\u63a5\u5f71\u54cd\u6570\u636e\u5e93\u7ed3\u6784\u5408\u7406\u6027\u3002<\/p>\n

—<\/p>\n","protected":false},"excerpt":{"rendered":"

— 1. \u6570\u636e\u6a21\u578b\u6982\u8ff0 – \u6570\u636e\u6a21\u578b\uff1a\u63cf\u8ff0\u73b0\u5b9e\u4e16\u754c\u6570\u636e\u7279\u5f81\u7684\u62bd\u8c61\u5de5\u5177\uff0c\u9700\u6ee1\u8db3\uff1a – \u771f\u5b9e\u6a21\u62df\u73b0\u5b9e\u4e16\u754c – \u6613\u4e8e\u7406\u89e3 – \u4fbf\u4e8e\u8ba1\u7b97\u673a\u5b9e\u73b0 – \u6570\u636e\u62bd\u8c61\u8fc7\u7a0b\uff1a – \u73b0\u5b9e\u4e16\u754c \u2192 \u4fe1\u606f\u4e16\u754c\uff08\u6982\u5ff5\u6a21\u578b\uff0c\u5982E-R\u6a21\u578b\uff09 \u2192 \u6570\u636e\u4e16\u754c\uff08\u903b\u8f91\u6a21\u578b\uff0c\u5982\u5173\u7cfb\u6a21\u578b\uff09 \u2192 \u8ba1\u7b97\u673a\u4e16\u754c\uff08\u7269\u7406\u6a21\u578b\uff09\u3002 — 2. \u6982\u5ff5\u6a21\u578b\uff08E-R\u6a21\u578b\uff09 \u6838\u5fc3\u8981\u7d20 – \u5b9e\u4f53\uff08Entity\uff09\uff1a\u5ba2\u89c2\u5b58\u5728\u7684\u4e8b\u7269\uff08\u5982\u5b66\u751f\u3001\u8bfe\u7a0b\uff09\u3002 – \u5c5e\u6027\uff08Attribute\uff09\uff1a\u5b9e\u4f53\u7684\u7279\u5f81\uff08\u5982\u5b66\u53f7\u3001\u59d3\u540d\uff09\u3002 – \u7801\uff08Key\uff09\uff1a\u552f\u4e00\u6807\u8bc6\u5b9e\u4f53\u7684\u5c5e\u6027\u6216\u5c5e\u6027\u7ec4\u3002 – \u57df\uff08Domain\uff09\uff1a\u5c5e\u6027\u7684\u53d6\u503c\u8303\u56f4\u3002 – \u8054\u7cfb\uff08Relationship\uff09\uff1a\u5b9e\u4f53\u95f4\u7684\u5173\u8054\uff0c\u5206\u4e3a\uff1a – 1:1\uff08\u4e00\u5bf9\u4e00\uff09 – 1:N\uff08\u4e00\u5bf9\u591a\uff09 – M:N\uff08\u591a\u5bf9\u591a\uff09 E-R\u56fe\u8868\u793a\u6cd5\uff08Chen\u65b9\u6cd5\uff09 – \u5b9e\u4f53\uff1a\u77e9\u5f62\u6846\uff08\u5982 `\u5b66\u751f`\uff09\u3002 – \u5c5e\u6027\uff1a\u692d\u5706\u6846\uff08\u5982 `\u5b66\u53f7`\uff09\u3002 – \u8054\u7cfb\uff1a\u83f1\u5f62\u6846\uff08\u5982 `\u9009\u4fee`\uff09\u3002 – \u5f31\u5b9e\u4f53\uff1a\u53cc\u77e9\u5f62\u6846\uff0c\u4f9d\u8d56\u5f3a\u5b9e\u4f53\u5b58\u5728\u3002 \u8bbe\u8ba1\u6b65\u9aa4 1. … Continue reading \u6570\u636e\u5e93\u539f\u7406-\u7b2c\u4e8c\u7ae0-PPT\u6574\u7406<\/span><\/a><\/p>\n","protected":false},"author":20615,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_locale":"en_US","_original_post":"https:\/\/zd1269878.noblogs.org\/?p=89","activitypub_content_warning":"","activitypub_content_visibility":"","activitypub_max_image_attachments":4,"activitypub_interaction_policy_quote":"anyone","activitypub_status":"","footnotes":""},"categories":[1,15],"tags":[16],"class_list":["post-89","post","type-post","status-publish","format-standard","hentry","category-general","category-15","tag-16","en-US"],"_links":{"self":[{"href":"https:\/\/zd1269878.noblogs.org\/wp-json\/wp\/v2\/posts\/89","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/zd1269878.noblogs.org\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/zd1269878.noblogs.org\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/zd1269878.noblogs.org\/wp-json\/wp\/v2\/users\/20615"}],"replies":[{"embeddable":true,"href":"https:\/\/zd1269878.noblogs.org\/wp-json\/wp\/v2\/comments?post=89"}],"version-history":[{"count":3,"href":"https:\/\/zd1269878.noblogs.org\/wp-json\/wp\/v2\/posts\/89\/revisions"}],"predecessor-version":[{"id":103,"href":"https:\/\/zd1269878.noblogs.org\/wp-json\/wp\/v2\/posts\/89\/revisions\/103"}],"wp:attachment":[{"href":"https:\/\/zd1269878.noblogs.org\/wp-json\/wp\/v2\/media?parent=89"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/zd1269878.noblogs.org\/wp-json\/wp\/v2\/categories?post=89"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/zd1269878.noblogs.org\/wp-json\/wp\/v2\/tags?post=89"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}