{"id":158743,"date":"2024-11-03T04:26:52","date_gmt":"2024-11-02T20:26:52","guid":{"rendered":"https:\/\/server.hk\/cnblog\/158743\/"},"modified":"2024-11-03T04:26:53","modified_gmt":"2024-11-02T20:26:53","slug":"%e9%97%9c%e4%bf%82%e6%95%b8%e6%93%9a%e5%ba%ab%e4%b8%ad%ef%bc%8c%e5%a6%82%e4%bd%95%e5%bb%ba%e7%ab%8b%e5%af%a6%e9%ab%94%e9%96%93%e8%81%af%e7%b9%ab%ef%bc%9f-%e9%97%9c%e4%bf%82%e6%95%b8%e6%93%9a%e5%ba%ab","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/158743\/","title":{"rendered":"\u95dc\u4fc2\u6578\u64da\u5eab\u4e2d\uff0c\u5982\u4f55\u5efa\u7acb\u5be6\u9ad4\u9593\u806f\u7e6b\uff1f (\u95dc\u4fc2\u6578\u64da\u5eab\u5be6\u9ad4\u9593\u806f\u7e6b)"},"content":{"rendered":"<h1 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id=\"3-%e7%a2%ba%e5%ae%9a%e9%97%9c%e4%bf%82%e9%a1%9e%e5%9e%8b-MuHqASskkX\">3. \u78ba\u5b9a\u95dc\u4fc2\u985e\u578b<\/h3>\n<p>\u95dc\u4fc2\u53ef\u4ee5\u5206\u70ba\u4e09\u7a2e\u985e\u578b\uff1a<\/p>\n<ul>\n<li><strong>\u4e00\u5c0d\u4e00\uff081:1\uff09<\/strong>\uff1a\u4f8b\u5982\uff0c\u6bcf\u500b\u5ba2\u6236\u53ea\u6709\u4e00\u500b\u5c0d\u61c9\u7684\u5e33\u6236\u3002<\/li>\n<li><strong>\u4e00\u5c0d\u591a\uff081:N\uff09<\/strong>\uff1a\u4f8b\u5982\uff0c\u4e00\u500b\u5ba2\u6236\u53ef\u4ee5\u6709\u591a\u500b\u8a02\u55ae\u3002<\/li>\n<li><strong>\u591a\u5c0d\u591a\uff08M:N\uff09<\/strong>\uff1a\u4f8b\u5982\uff0c\u5b78\u751f\u548c\u8ab2\u7a0b\u4e4b\u9593\u7684\u95dc\u4fc2\uff0c\u4e00\u500b\u5b78\u751f\u53ef\u4ee5\u9078\u64c7\u591a\u9580\u8ab2\u7a0b\uff0c\u800c\u4e00\u9580\u8ab2\u7a0b\u4e5f\u53ef\u4ee5\u6709\u591a\u500b\u5b78\u751f\u3002<\/li>\n<\/ul>\n<h3 id=\"4-%e4%bd%bf%e7%94%a8%e5%a4%96%e9%8d%b5%e5%bb%ba%e7%ab%8b%e8%81%af%e7%b9%ab-MuHqASskkX\">4. \u4f7f\u7528\u5916\u9375\u5efa\u7acb\u806f\u7e6b<\/h3>\n<p>\u5728\u95dc\u4fc2\u6578\u64da\u5eab\u4e2d\uff0c\u5916\u9375\u662f\u7528\u4f86\u5efa\u7acb\u5be6\u9ad4\u9593\u806f\u7e6b\u7684\u4e3b\u8981\u5de5\u5177\u3002\u5916\u9375\u662f\u6307\u4e00\u500b\u8868\u4e2d\u7684\u4e00\u500b\u5b57\u6bb5\uff0c\u5b83\u5f15\u7528\u53e6\u4e00\u500b\u8868\u7684\u4e3b\u9375\u3002\u9019\u6a23\u53ef\u4ee5\u78ba\u4fdd\u6578\u64da\u7684\u4e00\u81f4\u6027\u548c\u5b8c\u6574\u6027\u3002<\/p>\n<h4 id=\"%e7%a4%ba%e4%be%8b%ef%bc%9a%e4%b8%80%e5%b0%8d%e5%a4%9a%e9%97%9c%e4%bf%82-MuHqASskkX\">\u793a\u4f8b\uff1a\u4e00\u5c0d\u591a\u95dc\u4fc2<\/h4>\n<pre><code>CREATE TABLE Customers (\n    CustomerID INT PRIMARY KEY,\n    Name VARCHAR(100),\n    Email VARCHAR(100)\n);\n\nCREATE TABLE Orders (\n    OrderID INT PRIMARY KEY,\n    OrderDate DATE,\n    CustomerID INT,\n    FOREIGN KEY (CustomerID) REFERENCES Customers(CustomerID)\n);<\/code><\/pre>\n<p>\u5728\u4e0a\u8ff0\u793a\u4f8b\u4e2d\uff0c\u300cOrders\u300d\u8868\u4e2d\u7684\u300cCustomerID\u300d\u5b57\u6bb5\u662f\u5916\u9375\uff0c\u5f15\u7528\u4e86\u300cCustomers\u300d\u8868\u4e2d\u7684\u300cCustomerID\u300d\u3002\u9019\u6a23\u5c31\u5efa\u7acb\u4e86\u4e00\u500b\u4e00\u5c0d\u591a\u7684\u95dc\u4fc2\uff1a\u4e00\u500b\u5ba2\u6236\u53ef\u4ee5\u6709\u591a\u500b\u8a02\u55ae\u3002<\/p>\n<h4 id=\"%e7%a4%ba%e4%be%8b%ef%bc%9a%e5%a4%9a%e5%b0%8d%e5%a4%9a%e9%97%9c%e4%bf%82-MuHqASskkX\">\u793a\u4f8b\uff1a\u591a\u5c0d\u591a\u95dc\u4fc2<\/h4>\n<p>\u5c0d\u65bc\u591a\u5c0d\u591a\u7684\u95dc\u4fc2\uff0c\u901a\u5e38\u9700\u8981\u4e00\u500b\u806f\u7d50\u8868\u4f86\u7ba1\u7406\u9019\u7a2e\u95dc\u4fc2\u3002<\/p>\n<pre><code>CREATE TABLE Students (\n    StudentID INT PRIMARY KEY,\n    Name VARCHAR(100)\n);\n\nCREATE TABLE Courses (\n    CourseID INT PRIMARY KEY,\n    CourseName VARCHAR(100)\n);\n\nCREATE TABLE StudentCourses (\n    StudentID INT,\n    CourseID INT,\n    PRIMARY KEY (StudentID, CourseID),\n    FOREIGN KEY (StudentID) REFERENCES Students(StudentID),\n    FOREIGN KEY (CourseID) REFERENCES Courses(CourseID)\n);<\/code><\/pre>\n<p>\u5728\u9019\u500b\u4f8b\u5b50\u4e2d\uff0c\u300cStudentCourses\u300d\u8868\u4f5c\u70ba\u806f\u7d50\u8868\uff0c\u5c07\u300cStudents\u300d\u548c\u300cCourses\u300d\u8868\u9023\u63a5\u8d77\u4f86\uff0c\u5f9e\u800c\u5be6\u73fe\u591a\u5c0d\u591a\u7684\u95dc\u4fc2\u3002<\/p>\n<h2 id=\"%e7%b5%90%e8%ab%96-MuHqASskkX\">\u7d50\u8ad6<\/h2>\n<p>\u5728\u95dc\u4fc2\u6578\u64da\u5eab\u4e2d\uff0c\u5efa\u7acb\u5be6\u9ad4\u9593\u7684\u806f\u7e6b\u662f\u8a2d\u8a08\u6578\u64da\u6a21\u578b\u7684\u95dc\u9375\u6b65\u9a5f\u3002\u901a\u904e\u6b63\u78ba\u5730\u4f7f\u7528\u5916\u9375\u548c\u8a2d\u8a08\u806f\u7d50\u8868\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u7ba1\u7406\u5be6\u9ad4\u4e4b\u9593\u7684\u95dc\u4fc2\uff0c\u78ba\u4fdd\u6578\u64da\u7684\u4e00\u81f4\u6027\u548c\u5b8c\u6574\u6027\u3002\u9019\u4e9b\u57fa\u672c\u6982\u5ff5\u548c\u6280\u8853\u5c0d\u65bc\u4efb\u4f55\u5e0c\u671b\u6df1\u5165\u4e86\u89e3\u95dc\u4fc2\u6578\u64da\u5eab\u7684\u4eba\u4f86\u8aaa\u90fd\u662f\u81f3\u95dc\u91cd\u8981\u7684\u3002<\/p>\n<p>\u5982\u679c\u60a8\u5c0d\u65bc\u5982\u4f55\u5728\u9999\u6e2f\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u74b0\u5883\u4e2d\u5be6\u65bd\u9019\u4e9b\u6578\u64da\u5eab\u6280\u8853\u6709\u8208\u8da3\uff0c\u6216\u60f3\u4e86\u89e3\u66f4\u591a\u95dc\u65bc <a href=\"https:\/\/server.hk\">\u9999\u6e2f\u4f3a\u670d\u5668<\/a> 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