用户需要打开DB 2命令窗口，并手动执行RUNSTATS命令以校正出现的表格命令行错误。
Users need to open the DB2 command window and manually perform the RUNSTATS command to correct table prompting errors.
某些防护性设计问题很容易指出：糟糕的表格，错误的消息以及嵌入式帮助是显而易见的。
Some defensive design issues are easy to spot: bad forms, error messages and inline help are obvious.
填写表格时，在看不到所敲文字的时候用户产生更多的错误。
Users make more errors when they can't see what they're typing while filling in a form.
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