diff --git a/.gitignore b/.gitignore
index 86babfcf7b0fd59a61e897d5f9d03d3983ee0c49..63db2dca9534911a0c88695707a1ee2b936fefe8 100644
--- a/.gitignore
+++ b/.gitignore
@@ -62,7 +62,7 @@ instance/
 .scrapy
 
 # Sphinx documentation
-docs/_build/
+sql/_build/
 
 # PyBuilder
 target/
diff --git a/config.py b/config.py
index 07803242a3418e5205a1832b88183697d7d4eff4..30c76bc07e9ae5ed409ea65ad8b8cdc8a5b936fa 100644
--- a/config.py
+++ b/config.py
@@ -12,10 +12,8 @@ if os.path.exists('.env'):
 class Config:
     ENV = os.getenv("ENV")
     LOG_TO_STDOUT = (os.getenv("LOG_TO_STDOUT") == 'true')
-
     SQLALCHEMY_ECHO = (os.getenv("SQLALCHEMY_ECHO") == 'true')
     SQLALCHEMY_TRACK_MODIFICATIONS = (os.getenv("SQLALCHEMY_TRACK_MODIFICATIONS") == 'true')
-
     FACE_NET_MODEL_PATH = os.getenv('FACE_NET_MODEL_PATH')
 
     @staticmethod
diff --git a/requirements.txt b/requirements.txt
index 1bc8a4f25d152878656d880aeb17a570b88db5d1..b0ccf0436a6702fbfaa06b7015584185574afcd8 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -11,5 +11,5 @@ pytest
 pymysql
 python-dotenv
 scikit-learn
-tensorflow
+tensorflow==1.15
 werkzeug
diff --git a/scheme.sql b/sql/scheme.sql
similarity index 77%
rename from scheme.sql
rename to sql/scheme.sql
index 9212753e595569994565a957b1a98d492bef0d07..2cdaea63ab04de650fa02df46ffb841cff9104af 100644
--- a/scheme.sql
+++ b/sql/scheme.sql
@@ -1,10 +1,13 @@
 -- 用户表
 create table t_user
 (
-    id                int primary key auto_increment,
+    id                int not null auto_increment,
     name              varchar(32) not null,
-    cell_phone_number varchar(32) not null
-);
+    cell_phone_number varchar(32) not null,
+    primary key (`id`)
+) ENGINE = InnoDB
+  AUTO_INCREMENT = 1
+  DEFAULT CHARSET = utf8mb4;
 
 -- 签到表 t_sign_in
 # create table t_sign_in
@@ -30,12 +33,15 @@ create table t_user
 drop table if exists t_photo;
 create table t_photo
 (
-    id        int primary key auto_increment,
+    id        int not null auto_increment,
     name      varchar(512) not null,
     embedding blob         not null,
     user_id   int          not null,
+    primary key (`id`),
     constraint userid foreign key (user_id) references t_user (id)
-);
+) ENGINE = InnoDB
+  AUTO_INCREMENT = 1
+  DEFAULT CHARSET = utf8mb4;
 
 -- 用户签到表 t_user_sign
 # create table t_user_sign