diff --git a/access_control_python/database.py b/access_control_python/database.py
new file mode 100644
index 0000000..58f52d2
--- /dev/null
+++ b/access_control_python/database.py
@@ -0,0 +1,71 @@
+import mysql.connector as sql
+from dataclasses import dataclass
+
+HOST = "192.168.0.239"
+USER = "detector"
+PASSWORD = "n9ZvEmZ7xSKE7cPx"
+
+@dataclass
+class Person():
+    id: int
+    name: str
+    surname: str
+    imagefile: str
+
+@dataclass
+class Student(Person):
+    pass
+
+@dataclass
+class Parent(Person):
+    pass
+
+class database:
+    db = None
+    cursor = None
+    def __init__(self) -> None:
+        self.db = sql.connect(host=HOST,user =USER,password=PASSWORD,database="face_detect")
+        self.cursor = self.db.cursor()
+        pass
+    def get_student_info(self, filename: str) -> Student:
+        statement = (f'SELECT * FROM students WHERE imagefile=\"{filename}\"')
+        self.cursor.execute(statement)
+        result = self.cursor.fetchone()
+        if len(result) == 0:
+            return None
+        student = Student(result[0],result[1],result[2],result[3])
+        return student
+    def get_parent_info(self, filename: str):
+        statement = (f'SELECT * FROM parents WHERE imagefile=\"{filename}\"')
+        self.cursor.execute(statement)
+        result = self.cursor.fetchone()
+        if len(result) == 0:
+            return None
+        parent = Parent(result[0],result[1],result[2],result[3])
+        return parent
+    def check_relationship_file(self, student_filename: str, parent_filename: str):
+        statement = f'SELECT id FROM `parent-student-relations` psr WHERE psr.student_id = (SELECT id FROM students WHERE students.imagefile = \"{student_filename}\") AND psr.parent_id  = (SELECT id FROM parents WHERE parents.imagefile = "{parent_filename}")'
+        self.cursor.execute(statement)
+        return self.cursor.fetchone() != None
+    def check_relationship(self, student: Student, parent: Parent):
+        statement = f'SELECT id FROM `parent-student-relations` psr WHERE psr.student_id = {student.id} AND psr.parent_id  = {parent.id}'
+        self.cursor.execute(statement)
+        return self.cursor.fetchone() != None
+    def log_access_student_file(self, student_filename: str, parent_filename: str):
+        statement = f'INSERT INTO face_detect.`access-log` (id, student_id, parent_id, `timestamp`) VALUES(NULL, (SELECT id FROM students WHERE students.imagefile = \"{student_filename}\"),  (SELECT id FROM parents WHERE parents.imagefile = "{parent_filename}"), NULL)'
+        self.cursor.execute(statement)
+        self.db.commit()
+    def log_access_parent_file(self, parent_filename: str):
+        statement = f'INSERT INTO face_detect.`access-log` (id, student_id, parent_id, `timestamp`) VALUES(NULL, NULL,  (SELECT id FROM parents WHERE parents.imagefile = "{parent_filename}"), NULL)'
+        self.cursor.execute(statement)
+        self.db.commit()
+    def log_access_student(self, student: Student, parent: Parent):
+        statement = f'INSERT INTO face_detect.`access-log` (id, student_id, parent_id, `timestamp`) VALUES(NULL, {student.id},  {parent.id}, NULL)'
+        self.cursor.execute(statement)
+        self.db.commit()
+    def log_access_parent(self, parent: Parent):
+        statement = f'INSERT INTO face_detect.`access-log` (id, student_id, parent_id, `timestamp`) VALUES(NULL, NULL,  {parent.id}, NULL)'
+        self.cursor.execute(statement)
+        self.db.commit()
+    def fetch_log() -> list:
+        pass
diff --git a/access_control_python/main.py b/access_control_python/main.py
index 407475f..340af18 100644
--- a/access_control_python/main.py
+++ b/access_control_python/main.py
@@ -3,12 +3,14 @@ import threading
 import time
 import face_processing as fp
 from access_control import access_control
+from database import database, Student, Parent
 
-SERIAL_PORT = "COM12"
+SERIAL_PORT_STM32 = "COM12"
+SERIAL_PORT_DISPLAY = "COM15"
 CAMERA_INDEX = 0
 
 cam = cv2.VideoCapture(CAMERA_INDEX)
-stm32 = access_control(SERIAL_PORT)
+stm32 = access_control(SERIAL_PORT_STM32)
 
 global img
 global frame_ready