{"id":153579,"date":"2024-11-02T08:37:19","date_gmt":"2024-11-02T00:37:19","guid":{"rendered":"https:\/\/server.hk\/cnblog\/153579\/"},"modified":"2024-11-02T08:37:20","modified_gmt":"2024-11-02T00:37:20","slug":"%e6%89%93%e9%80%a0%e8%87%aa%e5%b7%b1%e7%9a%84%e6%95%b8%e6%93%9a%e8%a8%aa%e5%95%8f%e5%b1%a4%e4%b8%80","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/153579\/","title":{"rendered":"\u6253\u9020\u81ea\u5df1\u7684\u6578\u64da\u8a2a\u554f\u5c64\u4e00"},"content":{"rendered":"<h1 id=\"%e6%89%93%e9%80%a0%e8%87%aa%e5%b7%b1%e7%9a%84%e6%95%b8%e6%93%9a%e8%a8%aa%e5%95%8f%e5%b1%a4-gdgHqTjDFo\">\u6253\u9020\u81ea\u5df1\u7684\u6578\u64da\u8a2a\u554f\u5c64<\/h1>\n<p>\u5728\u7576\u4eca\u6578\u5b57\u5316\u7684\u6642\u4ee3\uff0c\u6578\u64da\u8a2a\u554f\u5c64\u7684\u8a2d\u8a08\u8207\u5be6\u73fe\u5c0d\u65bc\u4f01\u696d\u7684\u904b\u71df\u81f3\u95dc\u91cd\u8981\u3002\u6578\u64da\u8a2a\u554f\u5c64\uff08Data Access Layer, DAL\uff09\u662f\u61c9\u7528\u7a0b\u5e8f\u8207\u6578\u64da\u5eab\u4e4b\u9593\u7684\u6a4b\u6a11\uff0c\u8ca0\u8cac\u6578\u64da\u7684\u8b80\u53d6\u3001\u5beb\u5165\u548c\u7ba1\u7406\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u6253\u9020\u4e00\u500b\u9ad8\u6548\u7684\u6578\u64da\u8a2a\u554f\u5c64\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u5be6\u7528\u7684\u793a\u4f8b\u548c\u5efa\u8b70\u3002<\/p>\n<h2 id=\"%e6%95%b8%e6%93%9a%e8%a8%aa%e5%95%8f%e5%b1%a4%e7%9a%84%e5%9f%ba%e6%9c%ac%e6%a6%82%e5%bf%b5-gdgHqTjDFo\">\u6578\u64da\u8a2a\u554f\u5c64\u7684\u57fa\u672c\u6982\u5ff5<\/h2>\n<p>\u6578\u64da\u8a2a\u554f\u5c64\u7684\u4e3b\u8981\u529f\u80fd\u662f\u5c01\u88dd\u6578\u64da\u5b58\u53d6\u7684\u908f\u8f2f\uff0c\u8b93\u61c9\u7528\u7a0b\u5e8f\u7684\u5176\u4ed6\u90e8\u5206\u4e0d\u5fc5\u76f4\u63a5\u8207\u6578\u64da\u5eab\u4ea4\u4e92\u3002\u9019\u6a23\u7684\u8a2d\u8a08\u4e0d\u50c5\u63d0\u9ad8\u4e86\u4ee3\u78bc\u7684\u53ef\u7dad\u8b77\u6027\uff0c\u9084\u80fd\u5920\u5728\u672a\u4f86\u66f4\u8f15\u9b06\u5730\u66f4\u63db\u6578\u64da\u5eab\u6216\u6578\u64da\u5b58\u5132\u6280\u8853\u3002<\/p>\n<h3 id=\"%e6%95%b8%e6%93%9a%e8%a8%aa%e5%95%8f%e5%b1%a4%e7%9a%84%e7%b5%84%e6%88%90%e9%83%a8%e5%88%86-gdgHqTjDFo\">\u6578\u64da\u8a2a\u554f\u5c64\u7684\u7d44\u6210\u90e8\u5206<\/h3>\n<ul>\n<li><strong>\u6578\u64da\u6a21\u578b\uff1a<\/strong>\u5b9a\u7fa9\u6578\u64da\u7684\u7d50\u69cb\u548c\u95dc\u4fc2\u3002<\/li>\n<li><strong>\u6578\u64da\u8a2a\u554f\u5c0d\u8c61\uff1a<\/strong>\u5c01\u88dd\u5c0d\u6578\u64da\u7684\u64cd\u4f5c\uff0c\u5982\u589e\u3001\u522a\u3001\u6539\u3001\u67e5\u3002<\/li>\n<li><strong>\u6578\u64da\u5eab\u9023\u63a5\u7ba1\u7406\uff1a<\/strong>\u8ca0\u8cac\u7ba1\u7406\u8207\u6578\u64da\u5eab\u7684\u9023\u63a5\uff0c\u78ba\u4fdd\u9023\u63a5\u7684\u6709\u6548\u6027\u548c\u6027\u80fd\u3002<\/li>\n<\/ul>\n<h2 id=\"%e8%a8%ad%e8%a8%88%e6%95%b8%e6%93%9a%e8%a8%aa%e5%95%8f%e5%b1%a4%e7%9a%84%e6%ad%a5%e9%a9%9f-gdgHqTjDFo\">\u8a2d\u8a08\u6578\u64da\u8a2a\u554f\u5c64\u7684\u6b65\u9a5f<\/h2>\n<h3 id=\"1-%e7%a2%ba%e5%ae%9a%e6%95%b8%e6%93%9a%e6%a8%a1%e5%9e%8b-gdgHqTjDFo\">1. \u78ba\u5b9a\u6578\u64da\u6a21\u578b<\/h3>\n<p>\u9996\u5148\uff0c\u9700\u8981\u6839\u64da\u696d\u52d9\u9700\u6c42\u8a2d\u8a08\u6578\u64da\u6a21\u578b\u3002\u9019\u901a\u5e38\u6d89\u53ca\u5230\u4f7f\u7528ER\u5716\uff08\u5be6\u9ad4\u95dc\u4fc2\u5716\uff09\u4f86\u8868\u793a\u6578\u64da\u4e4b\u9593\u7684\u95dc\u4fc2\u3002\u4f8b\u5982\uff0c\u5c0d\u65bc\u4e00\u500b\u96fb\u5b50\u5546\u52d9\u5e73\u53f0\uff0c\u53ef\u80fd\u9700\u8981\u8a2d\u8a08\u7528\u6236\u3001\u7522\u54c1\u548c\u8a02\u55ae\u7b49\u5be6\u9ad4\u3002<\/p>\n<h3 id=\"2-%e9%81%b8%e6%93%87%e6%95%b8%e6%93%9a%e8%a8%aa%e5%95%8f%e6%8a%80%e8%a1%93-gdgHqTjDFo\">2. \u9078\u64c7\u6578\u64da\u8a2a\u554f\u6280\u8853<\/h3>\n<p>\u6839\u64da\u9805\u76ee\u7684\u9700\u6c42\u9078\u64c7\u5408\u9069\u7684\u6578\u64da\u8a2a\u554f\u6280\u8853\u3002\u5e38\u898b\u7684\u9078\u64c7\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><strong>ORM\uff08\u5c0d\u8c61\u95dc\u4fc2\u6620\u5c04\uff09\uff1a<\/strong>\u5982Hibernate\u3001Entity Framework\u7b49\uff0c\u80fd\u5920\u5c07\u6578\u64da\u5eab\u4e2d\u7684\u8868\u6620\u5c04\u70ba\u5c0d\u8c61\uff0c\u7c21\u5316\u6578\u64da\u64cd\u4f5c\u3002<\/li>\n<li><strong>\u76f4\u63a5SQL\u67e5\u8a62\uff1a<\/strong>\u5c0d\u65bc\u6027\u80fd\u8981\u6c42\u8f03\u9ad8\u7684\u5834\u666f\uff0c\u53ef\u4ee5\u9078\u64c7\u76f4\u63a5\u4f7f\u7528SQL\u8a9e\u53e5\u9032\u884c\u6578\u64da\u64cd\u4f5c\u3002<\/li>\n<\/ul>\n<h3 id=\"3-%e5%af%a6%e7%8f%be%e6%95%b8%e6%93%9a%e8%a8%aa%e5%95%8f%e5%b0%8d%e8%b1%a1-gdgHqTjDFo\">3. \u5be6\u73fe\u6578\u64da\u8a2a\u554f\u5c0d\u8c61<\/h3>\n<p>\u5728\u9019\u4e00\u6b65\u4e2d\uff0c\u6839\u64da\u9078\u64c7\u7684\u6280\u8853\u5be6\u73fe\u6578\u64da\u8a2a\u554f\u5c0d\u8c61\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u4f7f\u7528Python\u548cSQLAlchemy\u7684\u7c21\u55ae\u793a\u4f8b\uff1a<\/p>\n<pre><code>from sqlalchemy import create_engine, Column, Integer, String\nfrom sqlalchemy.ext.declarative import declarative_base\nfrom sqlalchemy.orm import sessionmaker\n\nBase = declarative_base()\n\nclass User(Base):\n    __tablename__ = 'users'\n    id = Column(Integer, primary_key=True)\n    name = Column(String)\n\n# \u5275\u5efa\u6578\u64da\u5eab\u5f15\u64ce\nengine = create_engine('sqlite:\/\/\/example.db')\nBase.metadata.create_all(engine)\n\n# \u5275\u5efa\u6703\u8a71\nSession = sessionmaker(bind=engine)\nsession = Session()\n\n# \u6dfb\u52a0\u65b0\u7528\u6236\nnew_user = User(name='Alice')\nsession.add(new_user)\nsession.commit()\n<\/code><\/pre>\n<h3 id=\"4-%e6%95%b8%e6%93%9a%e5%ba%ab%e9%80%a3%e6%8e%a5%e7%ae%a1%e7%90%86-gdgHqTjDFo\">4. \u6578\u64da\u5eab\u9023\u63a5\u7ba1\u7406<\/h3>\n<p>\u6709\u6548\u7684\u6578\u64da\u5eab\u9023\u63a5\u7ba1\u7406\u662f\u78ba\u4fdd\u61c9\u7528\u7a0b\u5e8f\u6027\u80fd\u7684\u95dc\u9375\u3002\u53ef\u4ee5\u4f7f\u7528\u9023\u63a5\u6c60\u6280\u8853\u4f86\u7ba1\u7406\u6578\u64da\u5eab\u9023\u63a5\uff0c\u9019\u6a23\u53ef\u4ee5\u6e1b\u5c11\u6bcf\u6b21\u8acb\u6c42\u6642\u7684\u9023\u63a5\u958b\u92b7\u3002<\/p>\n<h2 id=\"%e6%9c%80%e4%bd%b3%e5%af%a6%e8%b8%90-gdgHqTjDFo\">\u6700\u4f73\u5be6\u8e10<\/h2>\n<ul>\n<li><strong>\u5206\u96e2\u95dc\u6ce8\u9ede\uff1a<\/strong>\u78ba\u4fdd\u6578\u64da\u8a2a\u554f\u5c64\u8207\u696d\u52d9\u908f\u8f2f\u5c64\u5206\u96e2\uff0c\u9019\u6a23\u53ef\u4ee5\u63d0\u9ad8\u4ee3\u78bc\u7684\u53ef\u7dad\u8b77\u6027\u3002<\/li>\n<li><strong>\u932f\u8aa4\u8655\u7406\uff1a<\/strong>\u5728\u6578\u64da\u8a2a\u554f\u5c64\u4e2d\u5be6\u73fe\u9069\u7576\u7684\u932f\u8aa4\u8655\u7406\u6a5f\u5236\uff0c\u4ee5\u4fbf\u5728\u6578\u64da\u5eab\u64cd\u4f5c\u5931\u6557\u6642\u80fd\u5920\u7d66\u51fa\u6e05\u6670\u7684\u932f\u8aa4\u4fe1\u606f\u3002<\/li>\n<li><strong>\u6027\u80fd\u512a\u5316\uff1a<\/strong>\u5b9a\u671f\u6aa2\u67e5\u548c\u512a\u5316\u6578\u64da\u67e5\u8a62\uff0c\u4f7f\u7528\u7d22\u5f15\u4f86\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-gdgHqTjDFo\">\u7e3d\u7d50<\/h2>\n<p>\u6253\u9020\u4e00\u500b\u9ad8\u6548\u7684\u6578\u64da\u8a2a\u554f\u5c64\u662f\u958b\u767c\u7a69\u5b9a\u548c\u53ef\u64f4\u5c55\u61c9\u7528\u7a0b\u5e8f\u7684\u57fa\u790e\u3002\u901a\u904e\u5408\u7406\u7684\u8a2d\u8a08\u548c\u5be6\u73fe\uff0c\u53ef\u4ee5\u78ba\u4fdd\u6578\u64da\u7684\u5b89\u5168\u6027\u548c\u53ef\u7528\u6027\u3002\u82e5\u60a8\u9700\u8981\u9032\u4e00\u6b65\u4e86\u89e3\u5982\u4f55\u5728\u9999\u6e2f\u642d\u5efa\u9ad8\u6548\u7684\u6578\u64da\u8a2a\u554f\u5c64\uff0c\u8acb\u53c3\u8003\u6211\u5011\u7684<a href=\"https:\/\/server.hk\">VPS<\/a>\u89e3\u6c7a\u65b9\u6848\uff0c\u9019\u5c07\u70ba\u60a8\u7684\u61c9\u7528\u63d0\u4f9b\u7a69\u5b9a\u7684\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b78\u7fd2\u5982\u4f55\u6253\u9020\u81ea\u5df1\u7684\u6578\u64da\u8a2a\u554f\u5c64\uff0c\u63d0\u5347\u6578\u64da\u7ba1\u7406\u6548\u7387\uff0c\u5be6\u73fe\u9748\u6d3b\u7684\u6578\u64da\u64cd\u4f5c\u8207\u5b89\u5168\u6027\u3002<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-153579","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/153579","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=153579"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/153579\/revisions"}],"predecessor-version":[{"id":153580,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/153579\/revisions\/153580"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=153579"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=153579"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=153579"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}