首先跟大家说明一点，我们做 IT 类的外包开发，是非标品开发，所以很有可能在开发过程中会有这样那样的需<em>求</em>修改，而这种需<em>求</em>修改很容易造成扯皮，进而影响到费用支付，甚至出现做完了项目收不到钱的情况。
那么，怎么保证自己的薪酬安全呢？
我们在开工前，一定要做好一些证据方面的准备（也就是“讨薪”的理论依据），这其中最重要的就是需<em>求</em>文档和验收标准。一定要让需<em>求</em>方提供这两个文档资料作为开发的基础。之后开发...
Idon’t know what that dream is that you have, I don't care how disappointing it might have been as you've been working toward that dream,but that dream that you’re holding in your mind, that it’s po...
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SQL语句优化一直是一个比较热门的话题，是面试的时候经常备问到的问题之一，网上有许多关于这方面的文章，可谓是多而杂乱，为了便于学习，我特意搜集以下30条具体建议，以帮助更多朋友。如果有不对的地方，还请各位多多指正！
1.对查询进行优化，应尽量避免全表扫描，首先应考虑在 where 及 order by 涉及的列上建立索引。
2.应尽量避免在 where 子句...
Police investigations of serial murder, rape and arson can be
assisted by a geographic perspective on the spatial behavior that led to the
crime scene. For any crime to occur there must have been an intersection in
both time and place between the offender and victim. How did this come to
happen? Wha
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