Product download information of order.
| Column | Type | Constraint | Description |
|---|---|---|---|
| shop | TEXT | PRIMARY KEY | Shop ID. (shop.username) |
| order_id | INTEGER | Order ID. (order.id) | |
| index | INTEGER | Index of ordered products. (order_product.index) | |
| code | INTEGER | NOT NULL | Indentification code. |
| remaining | INTEGER | NOT NULL | Remaining number of download. |
CREATE TABLE download (
shop TEXT,
order_id INTEGER,
index INTEGER,
code TEXT,
remaining INTEGER,
PRIMARY KEY(shop, order_id, index)
);