Indeed, the time to fetch information from a repository — be it a file or database server — far exceeds the lapse required to compile and perhaps even execute a PHP program.
实际上，用于从存储库(文件或数据库服务器)中获取信息的时间远高于编译并且甚至是执行PHP程序所需耗费的时间。
After the FETCH, the program does "before and after" checking to see if anything on the row was changed by a different user while our user was staring at the screen display.
FETCH之后，程序进行“前后”检查，来查看在进行屏幕显示时，是否有不同用户对该行做了改动。
You may be wondering why the program did not put selb and STQD in the same fetch group.
您可能会纳闷为什么程序不将selb和stqd放到一个取出组中。
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