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分类、品牌、商品结构设计

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Jun 23, 2016 pm 01:44 PM

求教像京东这样的分类、品牌、商品的表结构设计，仔细想了一下这三类的关系还是挺复杂的，
一个商品可能在一个分类下有N个品牌
一个品牌下有N个分类N个商品
一个分类下有N个品牌N个商品
类似这样的结构怎么设计表结构比较效率。

回复讨论(解决方案)

商品表，记录商品属性，并赋予商品唯一货号
品牌表，记录品牌信息，并赋予品牌唯一编号
分类表，记录分类信息，并赋予分类唯一分类号
商品品牌表，货号，品牌编号
商品分类表，货号，分类号

恩，这样设计可行，用两个关联表去连接。电子会有多级分类，之前一直用id,name parent_id 这种方法去递归,如果访问量很大这种方法有明显的瓶颈，版主能给点建议不。辛苦。

多级分类可从分类表引申
你现在用的是邻接列表算法，读取时需要递归遍历
不过商品分类变数不大，可以改造成预排序遍历树算法的，来提高读取的速度（插入、修改、删除的开销就要大些了）
从邻接列表算法到预排序遍历树算法只需运行一次递归函数

相关知识见 http://www.baidu.com/s?wd=%E9%A2%84%E6%8E%92%E5%BA%8F%E9%81%8D%E5%8E%86%E6%A0%91%E7%AE%97%E6%B3%95&ie=utf-8

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