数据库
今天学了数据库管理的增删改,学的很不好 ,回去要再好好看看书,明天要学查了 ,它是应用比较多的,以前已经落下好多了,再不能拖班级后腿了.

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三不够===预习不够,复习不够,练习不够
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谢谢老师 我会努力的
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