database-design之管理 Web 应用程序权限的最佳方法是什么之位掩码还是数据库表 我正在考虑为“管理”Web 应用程序设计权限系统的最佳方法。该应用程序可能有许多用户,每个用户都可以被分配特定的角色;可以允许其中一些用户在角色之外执行特定任务。 我可以想到两种设计方法:一种是使用“权限”表,其中每个用户一行,以及 ...
The second problem : Web database design [1] Think about the real world objects you are modeling (考虑要建模的真正对象) [2] Avoid storing redundant data (避免数据重复) [3] Use atomic column values (使用原子列值) [4] Choose sensible keys (选择有意义的主键) [5] Think about the question...
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MIDAS/DB: a Methodological Framework for Web Database Design. DASWIS 2001. Yokohama (Japan), November, 2001. Springer-Verlag, LNCS 2465, pp. 227-238, 2002.Marcos E, Cáceres P, Vela B, Cavero JM: MIDAS/BD:A Methodological Framework for Web Database Design. ER 2001 Workshops, LNCS 2465...
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4 ABSTRACTION AND GENERATION A design language has been developed to describe PHCs on an abstract level. This language consists of two di erent parts to separate the functionality and the database operations from the layout, re ecting the separation into the S{ and O{ procedures as mentioned...
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Database management software is an important part of getting more out of your company’s data. These top options might be what you need.
它尤其适用于database-structure的有大量信息内容的网站。在这种情况下,用页面本身导航比使用一个非常长的navigation bar要游有用很多。举个例子:bbc.co.uk/tv • 超链接-Contextual links使用大量的链接作为在页面内部的导航。最典型的例子就是维基百科了～当使用这种导航方式的时候,设计是要注意:保证链接可以清除...