现在,开始学习怎么配置一对一的关系,众所周知,一对一的关系是:一个表中的主键,在另外一个表中,同时是主键和外键【实际上是一对零或者一对一】。请注意:一对一的关系,在MS SQL Server中,技术上是不可能实现的,主要还是一对零或者一对一的关系。想了解更多的实体关系,请看MSDN,这里面讲解的很详...
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其他好文 时间:
2015-12-13 16:55:41
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161
题目:You are playing the following Nim Game with your friend: There is a heap of stones on the table, each time one of you take turns to remove 1 to 3 s...
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2015-12-13 08:32:26
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保护ASP.NET 应用免受 CSRF 攻击CSRF是什么? CSRF(Cross-site request forgery),中文名称:跨站请求伪造,也被称为:one click attack/session riding,缩写为:CSRF/XSRF。CSRF(Cross Site Reques....
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Web程序 时间:
2015-12-13 00:45:01
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1定义hash的语法改变old_way = {:foo => "bar", :one => 1}new_way = {foo: "bar", one: 1}2 方法中传递hashdef some_method(hash = {})# do stuffendsome_method(:foo => "b...
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其他好文 时间:
2015-12-12 21:35:37
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184
题目:Given an arraynumscontainingn+ 1 integers where each integer is between 1 andn(inclusive), prove that at least one duplicate number must exist. Ass...
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其他好文 时间:
2015-12-12 06:59:34
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five social insurance and one housing fund 五险一金medical insurance 医疗保险unemployment insurance 失业保险deposit insurance 存款保险maternity i...
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2015-12-12 00:03:26
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MariaDB starting with 10.0.1Multi-source replication means that one server has many masters from which it replicates. This feature was added in MariaD...
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其他好文 时间:
2015-12-11 23:58:49
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题目连接https://leetcode.com/problems/merge-k-sorted-lists/Merge k Sorted ListsDescriptionMerge k sorted linked lists and return it as one sorted list. An...
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2015-12-11 22:03:12
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1 var url = require('url');2 var a = url.resolve('/one/two/three', 'four') ,3 b = url.resolve('http://example.com/', '/one'),4 c = url.resolve('http:/...
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Web程序 时间:
2015-12-10 16:51:26
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140
问题描述:Convert a non-negative integer to its english words representation. Given input is guaranteed to be less than 231- 1.For example,123 -> "One Hund...
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编程语言 时间:
2015-12-10 15:03:37
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165