更新了后端数据库信息

back/dataset/EmoLLM数据库E-R图/EmoLLM数据库E-R图.md

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+# EmoLLM数据库总E-R图
+
+![image](./er1.png)
+
+# 关系属性图
+
+## 1、Users
+
+![image](./er2.png)
+
+## 2、Characters
+
+![image](./er3.png)
+
+## 3、Sessions
+
+![image](./er4.png)
+
+## 4、Messages
+
+![image](./er5.png)

back/dataset/EmoLLM数据库SQL.md

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+# 建库SQL语句：
+
+```sql
+-- Database: EmoLLM
+
+-- DROP DATABASE IF EXISTS "EmoLLM";
+
+CREATE DATABASE "EmoLLM"
+    WITH
+    OWNER = postgres
+    ENCODING = 'UTF8'
+    LC_COLLATE = 'Chinese (Simplified)_China.936'
+    LC_CTYPE = 'Chinese (Simplified)_China.936'
+    LOCALE_PROVIDER = 'libc'
+    TABLESPACE = pg_default
+    CONNECTION LIMIT = -1
+    IS_TEMPLATE = False;
+```
+
+## 1、创建Users表：
+
+```sql
+-- Table: public.Users
+
+-- DROP TABLE IF EXISTS public."Users";
+
+CREATE TABLE IF NOT EXISTS public."Users"
+(
+    user_id integer NOT NULL DEFAULT nextval('users_id_seq'::regclass),
+    phone_number "char" NOT NULL,
+    name "char" NOT NULL,
+    gender boolean NOT NULL,
+    school "char" NOT NULL,
+    create_time time with time zone,
+    llog_in_time time with time zone,
+    email "char",
+    user_state bigint DEFAULT 1,
+    CONSTRAINT "Users_pkey" PRIMARY KEY (user_id),
+    CONSTRAINT phone_number UNIQUE (phone_number)
+)
+
+TABLESPACE pg_default;
+
+ALTER TABLE IF EXISTS public."Users"
+    OWNER to postgres;
+
+COMMENT ON COLUMN public."Users".user_id
+    IS '用户id';
+
+COMMENT ON COLUMN public."Users".phone_number
+    IS '电话号码';
+
+COMMENT ON COLUMN public."Users".name
+    IS '昵称';
+
+COMMENT ON COLUMN public."Users".gender
+    IS '性别，0代表男，1代表女';
+
+COMMENT ON COLUMN public."Users".school
+    IS '学校';
+
+COMMENT ON COLUMN public."Users".create_time
+    IS '用户创建时间';
+
+COMMENT ON COLUMN public."Users".llog_in_time
+    IS '用户最后一次登陆时间';
+
+COMMENT ON COLUMN public."Users".email
+    IS '预留字段，为以后可能的收集做准备';
+
+COMMENT ON COLUMN public."Users".user_state
+    IS '0表示已删除，1表示正常状态，2表示用户被禁用';
+```
+
+## 2、创建Characters表：
+
+```sql
+-- Table: public.Characters
+
+-- DROP TABLE IF EXISTS public."Characters";
+
+CREATE TABLE IF NOT EXISTS public."Characters"
+(
+    character_id integer NOT NULL GENERATED ALWAYS AS IDENTITY ( INCREMENT 1 START 1 MINVALUE 1 MAXVALUE 2147483647 CACHE 1 ),
+    user_id integer NOT NULL,
+    image bytea,
+    description "char",
+    character_name "char" NOT NULL,
+    character_state boolean,
+    CONSTRAINT "Characters_pkey" PRIMARY KEY (character_id),
+    CONSTRAINT user_id FOREIGN KEY (user_id)
+        REFERENCES public."Users" (user_id) MATCH SIMPLE
+        ON UPDATE NO ACTION
+        ON DELETE NO ACTION
+        NOT VALID
+)
+
+TABLESPACE pg_default;
+
+ALTER TABLE IF EXISTS public."Characters"
+    OWNER to postgres;
+
+COMMENT ON COLUMN public."Characters".character_id
+    IS '模型id';
+
+COMMENT ON COLUMN public."Characters".user_id
+    IS '用户id';
+
+COMMENT ON COLUMN public."Characters".image
+    IS '用户与模型的聊天背景';
+
+COMMENT ON COLUMN public."Characters".description
+    IS '用户对自定义模型的描述';
+
+COMMENT ON COLUMN public."Characters".character_name
+    IS '模型名称';
+
+COMMENT ON COLUMN public."Characters".character_state
+    IS '模型状态，0表示角色已被用户删除，1表示未删除';
+```
+
+## 3、创建Sessions表：
+
+```sql
+-- Table: public.Sessions
+
+-- DROP TABLE IF EXISTS public."Sessions";
+
+CREATE TABLE IF NOT EXISTS public."Sessions"
+(
+    session_id integer NOT NULL GENERATED ALWAYS AS IDENTITY ( INCREMENT 1 START 1 MINVALUE 1 MAXVALUE 2147483647 CACHE 1 ),
+    user_id integer NOT NULL,
+    character_id integer NOT NULL,
+    start_time time with time zone,
+    end_time time with time zone,
+    session_state boolean,
+    CONSTRAINT "Sessions_pkey" PRIMARY KEY (session_id),
+    CONSTRAINT character_id FOREIGN KEY (character_id)
+        REFERENCES public."Characters" (character_id) MATCH SIMPLE
+        ON UPDATE NO ACTION
+        ON DELETE NO ACTION
+        NOT VALID,
+    CONSTRAINT user_id FOREIGN KEY (user_id)
+        REFERENCES public."Users" (user_id) MATCH SIMPLE
+        ON UPDATE NO ACTION
+        ON DELETE NO ACTION
+        NOT VALID
+)
+
+TABLESPACE pg_default;
+
+ALTER TABLE IF EXISTS public."Sessions"
+    OWNER to postgres;
+
+COMMENT ON COLUMN public."Sessions".session_id
+    IS '会话id';
+
+COMMENT ON COLUMN public."Sessions".user_id
+    IS '用户id';
+
+COMMENT ON COLUMN public."Sessions".character_id
+    IS '模型id';
+
+COMMENT ON COLUMN public."Sessions".start_time
+    IS '会话开始时间';
+
+COMMENT ON COLUMN public."Sessions".end_time
+    IS '会话终止时间';
+
+COMMENT ON COLUMN public."Sessions".session_state
+    IS '会话状态，0表示已被用户删除，1表示未删除';
+```
+
+## 4、创建Messages表：
+
+```sql
+-- Table: public.Messages
+
+-- DROP TABLE IF EXISTS public."Messages";
+
+CREATE TABLE IF NOT EXISTS public."Messages"
+(
+    message_id integer NOT NULL GENERATED ALWAYS AS IDENTITY ( INCREMENT 1 START 1 MINVALUE 1 MAXVALUE 2147483647 CACHE 1 ),
+    session_id integer NOT NULL,
+    type integer NOT NULL,
+    message_text "char",
+    message_time time with time zone,
+    massage_state boolean,
+    CONSTRAINT message_id PRIMARY KEY (message_id),
+    CONSTRAINT session_id FOREIGN KEY (session_id)
+        REFERENCES public."Sessions" (session_id) MATCH SIMPLE
+        ON UPDATE NO ACTION
+        ON DELETE NO ACTION
+        NOT VALID
+)
+
+TABLESPACE pg_default;
+
+ALTER TABLE IF EXISTS public."Messages"
+    OWNER to postgres;
+
+COMMENT ON COLUMN public."Messages".message_id
+    IS '消息id';
+
+COMMENT ON COLUMN public."Messages".session_id
+    IS '会话id';
+
+COMMENT ON COLUMN public."Messages".type
+    IS '消息种类，0为模型的text消息，1为用户的text消息';
+
+COMMENT ON COLUMN public."Messages".message_text
+    IS '消息内容';
+
+COMMENT ON COLUMN public."Messages".message_time
+    IS '消息时间';
+
+COMMENT ON COLUMN public."Messages".massage_state
+    IS '消息状态，0表示已被用户删除，1表示未删除';
+```
+