CREATE TABLE item_type(
    id INT,
    TYPE enum (weapon, armor, decor),
    name CHAR
);

CREATE TABLE item (
    id INT,
    item_type_id INT,
    name CHAR,
    params BLOB
);

CREATE TABLE item_entity (
    id INT,
    item_id INT
);

CREATE TABLE inventory (
    id INT,
    glagiator_id INT,
    item_entity_id INT
);