企业级实战——品优购电商系统开发- 75 76 77 .商品分类-列表-前后端表结构

刺骨的言语ヽ痛彻心扉 2021-07-25 23:06 149阅读 0赞

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关系型表  表示    树状结构 数据

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-模版 没有层次关系

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关联查询
    品牌关联   模版规格可能一致

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三级分类

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不更改数据访问层  Dao扩展

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