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提交数据库设计 #1

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提交数据库设计 #1

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4 changes: 0 additions & 4 deletions db/example.md
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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

| :------: | :------: | :----------: | :----------: |
| 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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这个用varchar就行

| pwd | varchar | 用户密码 | 123456 |



图片信息：

| 字段名称 | 数据类型 | 释义 | 示例 |
| :------: | :------: | :----------: | :---------------------------------------------: |
| 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 |
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日期统一用timestamp 规避一些时区引起的问题

| taketime | datetime | 拍摄时间 | 2021-5-10 12:12:12 |
| size | varchar | 图片大小 | 105kb |
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这个存数字 单位B 由展示方去计算最终展示内容

| sizeinfo | varchar | 图片尺寸信息 | 1024*768 |
| 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