数据库角色用于管理数据库内部的访问和权限。数据库角色成员是能通过客户端软件如SSMS连接SQL Server的数据库用户,但是你可能希望授予某个特殊用户一些特权,但是仅限制于某个应用程序而不是SSMS时,第一个解决方案是使用专用SQL 帐号作为应用程序的登录。但是这个方案的缺点是需要使用SQL Server身份验证,并且不能标识出哪个用户正在连接SQL Server。但是可以使用同一个应用程序登录名,并且使用Windows身份验证,因此能更好地标识应用程序的用户,从而在必要的时候提升权限。...
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其他好文 时间:
2014-10-09 15:47:48
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145
Chapter 28 UIStoryboard1. A segue moves another view controller’s view onto the screen when triggered and is represented by an instance of UIStoryboar...
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其他好文 时间:
2014-10-07 20:49:34
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141
struct TreeNode{ int val; TreeNode* left; TreeNode* right; TreeNode(int val):val(val),left(NULL),right(NULL){}};Not all binary trees are bina...
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其他好文 时间:
2014-10-07 15:02:23
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221
Chapter 27 Controlling Animations1. The simplest block-based animation method on UIView is animateWithDuration:animations:. This method takes in the d...
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其他好文 时间:
2014-10-06 16:23:10
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185
JavaScript is all about objects. Objects are the foundation of everything, so if you’reunfamiliar with objects, you’re going to learn quickly. The goa...
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Web程序 时间:
2014-10-06 05:33:49
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318
Chapter 23 Core Data1. Core Data is only able to store certain data types in its store, and UIImage is not one of these types. Instead, you declared t...
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其他好文 时间:
2014-10-06 00:12:19
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300
Chapter 21 WebServices and UIWebView1. Usually, fetch data from a web server using four handy classes: NSURL, NSURLRequest, NSURLSessionTask, and NSUR...
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Web程序 时间:
2014-10-05 15:11:08
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253
You’re excited; your client is excited. All is well. You’ve just launched the client’slatest website, and it’s fantastic. You’ve put in hours of sweat...
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Web程序 时间:
2014-10-05 14:33:28
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290
Chapter 20 Dynamic Type1. The Dynamic Type system is centered around text styles. When a font is requested for a given text style, the system will use...
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其他好文 时间:
2014-10-04 23:30:27
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250
Chapter 19 Subclassing UITableViewCell1. iOS provides a convenient suite of functions to create offscreen contexts and produce images from them. To cr...
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其他好文 时间:
2014-10-04 22:21:17
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208