提交数据库设计 #1
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提交数据库设计 #1
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ATQQ
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May 19, 2021
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| | 字段名称 | 数据类型 | 释义 | 示例 | | |||
| | user_id | Integer | 用户唯一标识 | 1 | | ||
| | name | varchar | 用户名称 | 张三 | | ||
| | number | varchar | 用户学号 | 201931061008 | | ||
| | grade | year | 用户年级 | 2019 | |
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| | 字段名称 | 数据类型 | 释义 | 示例 | | |||
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然后通常还需再记录一下注册时间，最后登录时间
这里还有个注册审核的流程，所以还需要一个字段表示用户当前的状态
其次平台区分了管理员和普通用户，所以还需要一个 字段区分角色
| | name | varchar | 图片原名称 | 聚会 | | ||
| | addtime | datetime | 上传时间 | 2021-5-11 12:12:12 | | ||
| | taketime | datetime | 拍摄时间 | 2021-5-10 12:12:12 | | ||
| | size | varchar | 图片大小 | 105kb | |
| | :------: | :------: | :----------: | :---------------------------------------------: | | ||
| | photo_id | Integer | 图片唯一标识 | 1 | | ||
| | name | varchar | 图片原名称 | 聚会 | | ||
| | addtime | datetime | 上传时间 | 2021-5-11 12:12:12 | |
| | format | varchar | 图片格式 | .jpg | | ||
| | url | varchar | 图片链接 | https://699pic.com/tupian-500470844.html | | ||
| | status | int | 图片状态 | 1(表示公开)，2（注册用户可看），3（仅自己可看） | | ||
| | label | varchar | 图片标签 | 团队聚会 | |
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标签这个功能的实现，光这个一个字段可能不行哦，可能还需要 1-2张表
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仔细品一下需求：
用户和平台管理员都可以为图片增删标签，如果这只有一个字段，那么如果两个用户同时进行更新操作（删除/添加）那么怎么处理
所以这里至少还需要有张标签的表，图片与标签关联关系的表
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第一次数据库设计提交