MySQL数据库的概念_MySQL
学习数据库的一些知识,写写博客方便梳理以及巩固知识。关于什么是数据库就举一个例子来说明,说的可能不够准确,只要明白一个大概的意思就够了,深刻的学习还是要去看书的。
讲讲生活中有关数据的例子:在一个中学,记录学生的基本信息,记录什么呢?记录学生的姓名、年龄、故乡。传统的方法是在一张纸上画表格(见下面),然后填入相应的数据。那么一张这样的表就记录着一个班级中所有学生的姓名、年龄以及故乡。假设初一年级有10个班,初二年级有8个班,初三年级有15个班,那么初一年级就会有10张这样的表,初二年级就会有8张,初三年级就会有15张,然后分别装入一个档案袋,交给王阿姨管理。以后要查询某个学生的信息,只要找王阿姨就行了。常见的数据库有:oracle、sqlser、mysql、access。我们所学习的MySQL就是数据库管理系统中的一种。下面给出图片帮助理解。

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