815 lines
17 KiB
Markdown
815 lines
17 KiB
Markdown
---
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source: AI回答.md
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updated: 2026-05-09
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---
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# 知习 MySQL 数据库表结构设计
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> 共 27 张表，v0.1 先建 24 张核心表。
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---
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## 通用字段规范
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每张核心表统一使用：
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```sql
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id BIGINT UNSIGNED AUTO_INCREMENT PRIMARY KEY,
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created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
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updated_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
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deleted_at DATETIME NULL
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```
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- `id`：内部主键
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- `created_at`：创建时间
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- `updated_at`：更新时间
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- `deleted_at`：软删除
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状态字段统一用 `VARCHAR(32)`，不用 MySQL ENUM。
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---
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## 一、用户与认证表（5 张）
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### 1. users 用户表
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```sql
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users
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- id BIGINT UNSIGNED PK
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- email VARCHAR(255) NULL
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- nickname VARCHAR(100) NULL
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- avatar_url VARCHAR(500) NULL
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- status VARCHAR(32) NOT NULL DEFAULT 'active'
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- onboarding_completed TINYINT(1) NOT NULL DEFAULT 0
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- last_login_at DATETIME NULL
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- created_at DATETIME
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- updated_at DATETIME
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- deleted_at DATETIME NULL
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```
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索引：
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```sql
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INDEX idx_users_email (email)
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INDEX idx_users_status (status)
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```
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---
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### 2. auth_accounts 第三方登录账号表
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```sql
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auth_accounts
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- id BIGINT UNSIGNED PK
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- user_id BIGINT UNSIGNED NOT NULL
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- provider VARCHAR(32) NOT NULL -- apple
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- provider_user_id VARCHAR(255) NOT NULL -- Apple userIdentifier / sub
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- email VARCHAR(255) NULL
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- raw_profile_json JSON NULL
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- created_at DATETIME
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- updated_at DATETIME
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```
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索引：
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```sql
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UNIQUE KEY uk_provider_user (provider, provider_user_id)
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INDEX idx_auth_accounts_user_id (user_id)
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```
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---
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### 3. refresh_tokens 刷新 Token 表
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```sql
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refresh_tokens
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- id BIGINT UNSIGNED PK
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- user_id BIGINT UNSIGNED NOT NULL
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- token_hash VARCHAR(255) NOT NULL
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- device_id VARCHAR(255) NULL
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- device_name VARCHAR(255) NULL
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- expires_at DATETIME NOT NULL
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- revoked_at DATETIME NULL
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- created_at DATETIME
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- updated_at DATETIME
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```
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索引：
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```sql
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INDEX idx_refresh_tokens_user_id (user_id)
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INDEX idx_refresh_tokens_token_hash (token_hash)
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```
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---
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### 4. user_profiles 用户资料扩展表
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```sql
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user_profiles
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- id BIGINT UNSIGNED PK
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- user_id BIGINT UNSIGNED NOT NULL
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- learning_identity VARCHAR(100) NULL -- 系统学习者 / 备考用户 / 知识工作者
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- learning_direction VARCHAR(255) NULL -- 认知科学 / AIGC / 产品设计
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- bio TEXT NULL
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- current_goal VARCHAR(255) NULL
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- created_at DATETIME
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- updated_at DATETIME
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```
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索引：
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```sql
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UNIQUE KEY uk_user_profiles_user_id (user_id)
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```
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---
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### 5. user_preferences 用户学习偏好表
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```sql
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user_preferences
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- id BIGINT UNSIGNED PK
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- user_id BIGINT UNSIGNED NOT NULL
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- preferred_methods JSON NULL
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-- ["active_recall", "spaced_repetition", "feynman", "retrieval_practice"]
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- default_focus_minutes INT NOT NULL DEFAULT 25
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- ai_suggestion_level VARCHAR(32) NOT NULL DEFAULT 'normal'
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-- low / normal / high
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- language VARCHAR(32) NOT NULL DEFAULT 'zh-CN'
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- appearance VARCHAR(32) NOT NULL DEFAULT 'system'
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- notification_enabled TINYINT(1) NOT NULL DEFAULT 1
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- created_at DATETIME
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- updated_at DATETIME
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```
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索引：
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```sql
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UNIQUE KEY uk_user_preferences_user_id (user_id)
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```
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---
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## 二、知识库相关表（5 张）
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### 6. knowledge_bases 知识库表
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```sql
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knowledge_bases
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- id BIGINT UNSIGNED PK
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- user_id BIGINT UNSIGNED NOT NULL
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- title VARCHAR(255) NOT NULL
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- description TEXT NULL
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- cover_key VARCHAR(100) NULL
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- status VARCHAR(32) NOT NULL DEFAULT 'active'
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-- active / archived / deleted
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- item_count INT NOT NULL DEFAULT 0
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- last_studied_at DATETIME NULL
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- created_at DATETIME
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- updated_at DATETIME
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- deleted_at DATETIME NULL
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```
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索引：
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```sql
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INDEX idx_knowledge_bases_user_id (user_id)
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INDEX idx_knowledge_bases_status (status)
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```
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---
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### 7. knowledge_items 知识点/内容表
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```sql
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knowledge_items
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- id BIGINT UNSIGNED PK
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- user_id BIGINT UNSIGNED NOT NULL
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- knowledge_base_id BIGINT UNSIGNED NOT NULL
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- parent_id BIGINT UNSIGNED NULL
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- item_type VARCHAR(32) NOT NULL
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-- chapter / lesson / concept / note / imported_doc
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- title VARCHAR(255) NOT NULL
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- content LONGTEXT NULL
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- summary TEXT NULL
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- source_type VARCHAR(32) NULL
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-- manual / file / url / ai_generated
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- source_ref VARCHAR(500) NULL
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- order_index INT NOT NULL DEFAULT 0
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- status VARCHAR(32) NOT NULL DEFAULT 'active'
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- created_at DATETIME
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- updated_at DATETIME
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- deleted_at DATETIME NULL
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```
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索引：
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```sql
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INDEX idx_knowledge_items_user_id (user_id)
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INDEX idx_knowledge_items_kb_id (knowledge_base_id)
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INDEX idx_knowledge_items_parent_id (parent_id)
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INDEX idx_knowledge_items_type (item_type)
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```
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---
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### 8. knowledge_item_relations 知识点关联表
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```sql
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knowledge_item_relations
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- id BIGINT UNSIGNED PK
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- user_id BIGINT UNSIGNED NOT NULL
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- source_item_id BIGINT UNSIGNED NOT NULL
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- target_item_id BIGINT UNSIGNED NOT NULL
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- relation_type VARCHAR(32) NOT NULL
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-- related / prerequisite / similar / conflict / extension
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- confidence DECIMAL(5,2) NULL
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- reason TEXT NULL
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- created_at DATETIME
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- updated_at DATETIME
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```
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索引：
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```sql
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INDEX idx_relations_source (source_item_id)
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INDEX idx_relations_target (target_item_id)
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```
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---
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### 9. tags 标签表
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```sql
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tags
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- id BIGINT UNSIGNED PK
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- user_id BIGINT UNSIGNED NOT NULL
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- name VARCHAR(100) NOT NULL
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- color VARCHAR(32) NULL
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- created_at DATETIME
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- updated_at DATETIME
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```
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索引：
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```sql
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UNIQUE KEY uk_user_tag_name (user_id, name)
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```
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---
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### 10. knowledge_item_tags 知识点标签关联表
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```sql
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knowledge_item_tags
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- id BIGINT UNSIGNED PK
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- knowledge_item_id BIGINT UNSIGNED NOT NULL
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- tag_id BIGINT UNSIGNED NOT NULL
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- created_at DATETIME
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```
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索引：
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```sql
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UNIQUE KEY uk_item_tag (knowledge_item_id, tag_id)
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```
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---
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## 三、资料导入相关表（2 张）
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### 11. uploaded_files 上传文件表
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```sql
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uploaded_files
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- id BIGINT UNSIGNED PK
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- user_id BIGINT UNSIGNED NOT NULL
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- filename VARCHAR(255) NOT NULL
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- mime_type VARCHAR(100) NULL
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- storage_path VARCHAR(500) NOT NULL
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- size_bytes BIGINT UNSIGNED NOT NULL DEFAULT 0
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- checksum VARCHAR(255) NULL
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- created_at DATETIME
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```
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索引：
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```sql
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INDEX idx_uploaded_files_user_id (user_id)
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```
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---
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### 12. document_imports 资料导入任务表
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```sql
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document_imports
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- id BIGINT UNSIGNED PK
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- user_id BIGINT UNSIGNED NOT NULL
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- knowledge_base_id BIGINT UNSIGNED NULL
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- file_id BIGINT UNSIGNED NULL
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- source_type VARCHAR(32) NOT NULL
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-- file / text / url
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- source_name VARCHAR(255) NULL
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- source_url VARCHAR(500) NULL
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- raw_text LONGTEXT NULL
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- status VARCHAR(32) NOT NULL DEFAULT 'pending'
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-- pending / processing / success / failed
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- progress INT NOT NULL DEFAULT 0
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- error_message TEXT NULL
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- result_json JSON NULL
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- started_at DATETIME NULL
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- completed_at DATETIME NULL
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- created_at DATETIME
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- updated_at DATETIME
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```
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索引：
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```sql
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INDEX idx_document_imports_user_id (user_id)
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INDEX idx_document_imports_status (status)
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```
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---
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## 四、学习过程相关表（2 张）
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### 13. learning_sessions 学习会话表
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```sql
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learning_sessions
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- id BIGINT UNSIGNED PK
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- user_id BIGINT UNSIGNED NOT NULL
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- knowledge_base_id BIGINT UNSIGNED NULL
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- knowledge_item_id BIGINT UNSIGNED NULL
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- mode VARCHAR(32) NOT NULL
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-- reading / active_recall / review / feynman / free_learning
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- status VARCHAR(32) NOT NULL DEFAULT 'active'
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-- active / completed / cancelled
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- started_at DATETIME NOT NULL
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- ended_at DATETIME NULL
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- duration_seconds INT NOT NULL DEFAULT 0
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- focus_minutes INT NULL
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- metadata JSON NULL
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- created_at DATETIME
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- updated_at DATETIME
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```
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索引：
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```sql
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INDEX idx_learning_sessions_user_id (user_id)
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INDEX idx_learning_sessions_item_id (knowledge_item_id)
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INDEX idx_learning_sessions_started_at (started_at)
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```
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---
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### 14. learning_records 学习记录表
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类似 GitHub commit log，语义是学习记录。
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```sql
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learning_records
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- id BIGINT UNSIGNED PK
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- user_id BIGINT UNSIGNED NOT NULL
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- session_id BIGINT UNSIGNED NULL
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- record_type VARCHAR(32) NOT NULL
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-- read / active_recall / review / ai_analysis / focus_item_completed
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- title VARCHAR(255) NOT NULL
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- description TEXT NULL
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- duration_seconds INT NOT NULL DEFAULT 0
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- occurred_at DATETIME NOT NULL
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- metadata JSON NULL
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- created_at DATETIME
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```
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索引：
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```sql
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INDEX idx_learning_records_user_id (user_id)
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INDEX idx_learning_records_occurred_at (occurred_at)
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```
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---
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## 五、主动回忆相关表（2 张）
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### 15. active_recall_questions 主动回忆问题表
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```sql
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active_recall_questions
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- id BIGINT UNSIGNED PK
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- user_id BIGINT UNSIGNED NOT NULL
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- knowledge_item_id BIGINT UNSIGNED NULL
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- question_text TEXT NOT NULL
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- difficulty VARCHAR(32) NULL
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-- easy / normal / hard
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- created_by VARCHAR(32) NOT NULL DEFAULT 'ai'
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-- ai / user / system
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- created_at DATETIME
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- updated_at DATETIME
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```
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索引：
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```sql
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INDEX idx_recall_questions_user_id (user_id)
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INDEX idx_recall_questions_item_id (knowledge_item_id)
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```
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---
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### 16. active_recall_answers 主动回忆回答表
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```sql
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active_recall_answers
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- id BIGINT UNSIGNED PK
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- user_id BIGINT UNSIGNED NOT NULL
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- question_id BIGINT UNSIGNED NULL
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- session_id BIGINT UNSIGNED NULL
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- answer_type VARCHAR(32) NOT NULL DEFAULT 'text'
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-- text / voice
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- answer_text LONGTEXT NULL
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- audio_file_id BIGINT UNSIGNED NULL
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- submitted_at DATETIME NOT NULL
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- created_at DATETIME
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```
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索引：
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```sql
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INDEX idx_recall_answers_user_id (user_id)
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INDEX idx_recall_answers_question_id (question_id)
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INDEX idx_recall_answers_session_id (session_id)
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```
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---
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## 六、AI 分析相关表（2 张）
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### 17. ai_analysis_jobs AI 分析任务表
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```sql
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ai_analysis_jobs
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- id BIGINT UNSIGNED PK
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- user_id BIGINT UNSIGNED NOT NULL
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- session_id BIGINT UNSIGNED NULL
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- answer_id BIGINT UNSIGNED NULL
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- job_type VARCHAR(32) NOT NULL
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-- active_recall_analysis / weak_point_detection / review_generation
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- status VARCHAR(32) NOT NULL DEFAULT 'pending'
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-- pending / processing / success / failed
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- progress INT NOT NULL DEFAULT 0
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- error_message TEXT NULL
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- queued_at DATETIME NULL
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- started_at DATETIME NULL
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- completed_at DATETIME NULL
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- created_at DATETIME
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- updated_at DATETIME
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```
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索引：
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```sql
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INDEX idx_ai_jobs_user_id (user_id)
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INDEX idx_ai_jobs_status (status)
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INDEX idx_ai_jobs_session_id (session_id)
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```
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---
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### 18. ai_analysis_results AI 分析结果表
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```sql
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ai_analysis_results
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- id BIGINT UNSIGNED PK
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- user_id BIGINT UNSIGNED NOT NULL
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- job_id BIGINT UNSIGNED NOT NULL
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- session_id BIGINT UNSIGNED NULL
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- answer_id BIGINT UNSIGNED NULL
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- summary TEXT NULL
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- mastery_score INT NULL -- 0-100
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- strengths JSON NULL
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- weaknesses JSON NULL
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- suggestions JSON NULL
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- next_actions JSON NULL
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- raw_result JSON NULL
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- created_at DATETIME
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- updated_at DATETIME
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```
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索引：
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```sql
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INDEX idx_ai_results_user_id (user_id)
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INDEX idx_ai_results_job_id (job_id)
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INDEX idx_ai_results_session_id (session_id)
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```
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---
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## 七、待巩固项表（1 张）
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### 19. focus_items 待巩固项表
|
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|
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类似 GitHub issue，学习语义叫「待巩固项」。
|
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|
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```sql
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focus_items
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- id BIGINT UNSIGNED PK
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- user_id BIGINT UNSIGNED NOT NULL
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- knowledge_base_id BIGINT UNSIGNED NULL
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- knowledge_item_id BIGINT UNSIGNED NULL
|
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- analysis_result_id BIGINT UNSIGNED NULL
|
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- title VARCHAR(255) NOT NULL
|
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- reason TEXT NULL
|
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- suggestion TEXT NULL
|
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- priority VARCHAR(32) NOT NULL DEFAULT 'normal'
|
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-- low / normal / high
|
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- status VARCHAR(32) NOT NULL DEFAULT 'open'
|
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-- open / in_review / completed / ignored
|
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- mastery_score INT NULL
|
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- due_at DATETIME NULL
|
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- completed_at DATETIME NULL
|
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- created_at DATETIME
|
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- updated_at DATETIME
|
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- deleted_at DATETIME NULL
|
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```
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|
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索引：
|
||
```sql
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INDEX idx_focus_items_user_id (user_id)
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INDEX idx_focus_items_status (status)
|
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INDEX idx_focus_items_due_at (due_at)
|
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```
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|
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---
|
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|
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## 八、复习相关表（3 张）
|
||
|
||
### 20. review_cards 复习卡片表
|
||
|
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```sql
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review_cards
|
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- id BIGINT UNSIGNED PK
|
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- user_id BIGINT UNSIGNED NOT NULL
|
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- knowledge_item_id BIGINT UNSIGNED NULL
|
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- focus_item_id BIGINT UNSIGNED NULL
|
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- front_text TEXT NOT NULL
|
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- back_text TEXT NULL
|
||
- difficulty VARCHAR(32) NULL
|
||
- status VARCHAR(32) NOT NULL DEFAULT 'active'
|
||
-- active / suspended / completed
|
||
- next_review_at DATETIME NULL
|
||
- interval_days INT NOT NULL DEFAULT 1
|
||
- ease_factor DECIMAL(4,2) NOT NULL DEFAULT 2.50
|
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- repetition_count INT NOT NULL DEFAULT 0
|
||
- lapse_count INT NOT NULL DEFAULT 0
|
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- created_at DATETIME
|
||
- updated_at DATETIME
|
||
- deleted_at DATETIME NULL
|
||
```
|
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|
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索引：
|
||
```sql
|
||
INDEX idx_review_cards_user_id (user_id)
|
||
INDEX idx_review_cards_next_review_at (next_review_at)
|
||
INDEX idx_review_cards_focus_item_id (focus_item_id)
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||
```
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---
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|
||
### 21. review_logs 复习记录表
|
||
|
||
```sql
|
||
review_logs
|
||
- id BIGINT UNSIGNED PK
|
||
- user_id BIGINT UNSIGNED NOT NULL
|
||
- review_card_id BIGINT UNSIGNED NOT NULL
|
||
- session_id BIGINT UNSIGNED NULL
|
||
- rating VARCHAR(32) NOT NULL
|
||
-- again / hard / good / easy
|
||
- response_text TEXT NULL
|
||
- reviewed_at DATETIME NOT NULL
|
||
- next_review_at DATETIME NULL
|
||
- created_at DATETIME
|
||
```
|
||
|
||
索引：
|
||
```sql
|
||
INDEX idx_review_logs_user_id (user_id)
|
||
INDEX idx_review_logs_card_id (review_card_id)
|
||
INDEX idx_review_logs_reviewed_at (reviewed_at)
|
||
```
|
||
|
||
---
|
||
|
||
### 22. review_plans 复习计划表
|
||
|
||
```sql
|
||
review_plans
|
||
- id BIGINT UNSIGNED PK
|
||
- user_id BIGINT UNSIGNED NOT NULL
|
||
- title VARCHAR(255) NOT NULL
|
||
- status VARCHAR(32) NOT NULL DEFAULT 'active'
|
||
-- active / completed / cancelled
|
||
- scheduled_at DATETIME NULL
|
||
- completed_at DATETIME NULL
|
||
- card_count INT NOT NULL DEFAULT 0
|
||
- created_at DATETIME
|
||
- updated_at DATETIME
|
||
```
|
||
|
||
索引：
|
||
```sql
|
||
INDEX idx_review_plans_user_id (user_id)
|
||
INDEX idx_review_plans_scheduled_at (scheduled_at)
|
||
```
|
||
|
||
---
|
||
|
||
## 九、学习活跃记录表（1 张）
|
||
|
||
### 23. daily_learning_activities 每日学习活跃表
|
||
|
||
用于个人中心的蓝色学习活跃图。
|
||
|
||
```sql
|
||
daily_learning_activities
|
||
- id BIGINT UNSIGNED PK
|
||
- user_id BIGINT UNSIGNED NOT NULL
|
||
- activity_date DATE NOT NULL
|
||
- duration_seconds INT NOT NULL DEFAULT 0
|
||
- sessions_count INT NOT NULL DEFAULT 0
|
||
- active_recall_count INT NOT NULL DEFAULT 0
|
||
- review_count INT NOT NULL DEFAULT 0
|
||
- ai_analysis_count INT NOT NULL DEFAULT 0
|
||
- completed_loop_count INT NOT NULL DEFAULT 0
|
||
- activity_level INT NOT NULL DEFAULT 0 -- 0-4，颜色深浅
|
||
- created_at DATETIME
|
||
- updated_at DATETIME
|
||
```
|
||
|
||
索引：
|
||
```sql
|
||
UNIQUE KEY uk_user_activity_date (user_id, activity_date)
|
||
INDEX idx_daily_activity_user_id (user_id)
|
||
```
|
||
|
||
---
|
||
|
||
## 十、通知与反馈表（2 张）
|
||
|
||
### 24. notifications 消息通知表
|
||
|
||
```sql
|
||
notifications
|
||
- id BIGINT UNSIGNED PK
|
||
- user_id BIGINT UNSIGNED NOT NULL
|
||
- type VARCHAR(32) NOT NULL
|
||
-- review_due / ai_analysis_done / learning_suggestion / system
|
||
- title VARCHAR(255) NOT NULL
|
||
- content TEXT NULL
|
||
- data JSON NULL
|
||
- read_at DATETIME NULL
|
||
- created_at DATETIME
|
||
```
|
||
|
||
索引：
|
||
```sql
|
||
INDEX idx_notifications_user_id (user_id)
|
||
INDEX idx_notifications_read_at (read_at)
|
||
INDEX idx_notifications_type (type)
|
||
```
|
||
|
||
---
|
||
|
||
### 25. feedbacks 用户反馈表
|
||
|
||
```sql
|
||
feedbacks
|
||
- id BIGINT UNSIGNED PK
|
||
- user_id BIGINT UNSIGNED NULL
|
||
- email VARCHAR(255) NULL
|
||
- category VARCHAR(64) NOT NULL
|
||
-- feature / bug / experience / privacy / other
|
||
- content TEXT NOT NULL
|
||
- device_info JSON NULL
|
||
- status VARCHAR(32) NOT NULL DEFAULT 'open'
|
||
-- open / processing / resolved / ignored
|
||
- created_at DATETIME
|
||
- updated_at DATETIME
|
||
```
|
||
|
||
索引：
|
||
```sql
|
||
INDEX idx_feedbacks_user_id (user_id)
|
||
INDEX idx_feedbacks_status (status)
|
||
```
|
||
|
||
---
|
||
|
||
## 十一、合规与系统表（2 张）
|
||
|
||
### 26. user_consents 用户协议同意记录表
|
||
|
||
```sql
|
||
user_consents
|
||
- id BIGINT UNSIGNED PK
|
||
- user_id BIGINT UNSIGNED NOT NULL
|
||
- consent_type VARCHAR(32) NOT NULL
|
||
-- privacy_policy / terms_of_service
|
||
- version VARCHAR(50) NOT NULL
|
||
- accepted_at DATETIME NOT NULL
|
||
- ip_address VARCHAR(100) NULL
|
||
- user_agent VARCHAR(500) NULL
|
||
- created_at DATETIME
|
||
```
|
||
|
||
索引：
|
||
```sql
|
||
INDEX idx_user_consents_user_id (user_id)
|
||
INDEX idx_user_consents_type (consent_type)
|
||
```
|
||
|
||
---
|
||
|
||
### 27. app_changelogs 更新记录表（可选）
|
||
|
||
```sql
|
||
app_changelogs
|
||
- id BIGINT UNSIGNED PK
|
||
- version VARCHAR(50) NOT NULL
|
||
- title VARCHAR(255) NOT NULL
|
||
- content TEXT NOT NULL
|
||
- platform VARCHAR(32) NOT NULL DEFAULT 'ios'
|
||
- published_at DATETIME NULL
|
||
- created_at DATETIME
|
||
- updated_at DATETIME
|
||
```
|
||
|
||
---
|
||
|
||
## v0.1 建表优先级
|
||
|
||
### 第一批（24 张，必须）
|
||
|
||
```text
|
||
users
|
||
auth_accounts
|
||
refresh_tokens
|
||
user_profiles
|
||
user_preferences
|
||
|
||
knowledge_bases
|
||
knowledge_items
|
||
tags
|
||
knowledge_item_tags
|
||
document_imports
|
||
uploaded_files
|
||
|
||
learning_sessions
|
||
learning_records
|
||
active_recall_questions
|
||
active_recall_answers
|
||
|
||
ai_analysis_jobs
|
||
ai_analysis_results
|
||
focus_items
|
||
|
||
review_cards
|
||
review_logs
|
||
|
||
daily_learning_activities
|
||
|
||
notifications
|
||
feedbacks
|
||
user_consents
|
||
```
|
||
|
||
### 第二批（3 张，可稍后）
|
||
|
||
```text
|
||
knowledge_item_relations
|
||
review_plans
|
||
app_changelogs
|
||
```
|
||
|
||
---
|
||
|
||
## 模块与表对应关系
|
||
|
||
```text
|
||
auth → users, auth_accounts, refresh_tokens
|
||
users → user_profiles, user_preferences, user_consents
|
||
knowledge-base → knowledge_bases
|
||
knowledge-items → knowledge_items, knowledge_item_relations, tags, knowledge_item_tags
|
||
document-import → uploaded_files, document_imports
|
||
learning-session → learning_sessions, learning_records
|
||
active-recall → active_recall_questions, active_recall_answers
|
||
ai-analysis → ai_analysis_jobs, ai_analysis_results
|
||
focus-items → focus_items
|
||
review → review_cards, review_logs, review_plans
|
||
learning-activity → daily_learning_activities
|
||
notifications → notifications
|
||
feedback → feedbacks
|
||
system → app_changelogs
|
||
```
|
||
|
||
---
|
||
|
||
## Prisma 生成规范
|
||
|
||
```text
|
||
所有表使用 BIGINT UNSIGNED AUTO_INCREMENT 主键
|
||
状态字段使用 VARCHAR，不使用 ENUM
|
||
JSON 字段用于存储 AI 分析结构化结果、用户偏好、元数据
|
||
核心表添加 created_at、updated_at、deleted_at
|
||
为 user_id、status、created_at、外键字段添加合理索引
|
||
```
|