TABLE: MARKS
    ID INT NOT NULL,
    Activity_id INT,
    User_id INT,
    Value FLOAT(2),
    IsAccepted BIT,
    PRIMARY KEY(ID)


TABLE: ACTIVITIES
    ID INT NOT NULL,
    Lecturer_id INT,
    Subject_id INT,
    Room_id INT,
    Type_id INT,
    Term DATETIME2,
    PRIMARY KEY(ID)

TABLE: USERACTIVITY
    ID INT NOT NULL,
    User_id INT,
    Activity_id INT,
    PRIMARY KEY(ID)

TABLE: ACTIVITYTYPE
    ID INT NOT NULL,
    Name VARCHAR(100),
    PRIMARY KEY(ID)

TABLE: FACULTIES
    ID INT NOT NULL,
    Name VARCHAR(100),
    Threshold INT NOT NULL,
    PRIMARY KEY(ID)