公司表和部门表的结构用一张还是两张（不包含扩展信息）
一张表
公司A
<code> ——部门
——部门</code>公司B
<code> ——部门A
——部门B
</code>还是这样建表 两张表:
公司表
<code> 公司A 公司B </code>
部门表
<code> ——部门A
——部门B
——部门C</code>回复内容：
一张表
公司A
<code> ——部门
——部门</code>公司B
<code> ——部门A
——部门B
</code>还是这样建表 两张表:
公司表
<code> 公司A 公司B </code>
部门表
<code> ——部门A
——部门B
——部门C</code>
建议用两张表来存储数据,部门表中存储公司的ID,以及上级部门的ID,这样你查的时候要查公司信息就去公司表查,要查某个公司下的部门,联合公司表和部门表就可以查出来,要查部门的上级部门你在部门表中查到部门的上级ID,然后再去部门表中查一下就可以查到
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