这样的交叉分类怎么设计数据库
这样的交叉分类如何设计数据库
如这个网站www.shoes.com
大家会如何设计呢，主要是分类表和产品表。
我是这样设置的
一个品牌表brand，一个用户对象表（women,girl,men这些）user_scope，还有一个产品分类表category
brand和user_scope都没有层级的概念，category需要添加一个level和parent字段。
然后是brand,user_scope,category之间的两两联系表。
brand_scope {id,brand_id,scope_id}
brand_category {id,brand_id,category_id,levl(标识category的层级)}
scope_category {id,scope_id,category_id,levl(标识category的层级)}
产品使用eav的结构，然后有其中3个字段对应品牌，用户对象，产品分类这样子
产品属性表product_option,{option_id,title,sku}
产品属性值表product_option_value{option_value_id,option_id,value},
产品属性联系表product_to_option{product_id,option_id}
这样设置有什么问题吗
------解决方案--------------------
产品属性联系表product_to_option{product_id,option_value_id}
应该是这样才对吧。
------解决方案--------------------
brand,user_scope,category之间的两两联系表
应该可以当做一个index表。一般情况下不去更新，只有用户后台点击更新index的时候再通过产品表中的brand,scope,category字段去更新index表。。。
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