def database():
    name = firstname.get()
    surname1 = surname.get()
    username1 = registerUsername.get()
    password1 = newPassword.get()

    conn = sqlite3.connect('Timetable.db')
    with conn:
        cursor=conn.cursor()
    cursor.execute('INSERT INTO StudentInformation (studentID, username, firstname, surname, password) VALUES(?,?,?,?)', (studentID, registerUsername,firstname,surname,newPassword))