USERS TABLE:
    ID INT NOT NULL UNIQUE,
    Login VARCHAR(100) NOT NULL,
    Password varchar(256) NOT NULL,
    FirstName VARCHAR(30) NOT NULL,
    SecondName VARCHAR(30),
    LastName VARCHAR(50) NOT NULL,
    PESEL VARCHAR(11) NOT NULL,
    Role_id INT NOT NULL,
    Indeks VARCHAR(6),
    Email VARCHAR(300),
    PhoneNumber VARCHAR(13),
    DateOfBirth DATE NOT NULL,
    Score INT,
    PRIMARY KEY(ID)