CREATE VERTEX User (PRIMARY_ID id STRING, age INT, gender STRING) WITH primary_id_as_attribute="true"; CREATE VERTEX Item (PRIMARY_ID id STRING, name STRING, category STRING) WITH primary_id_as_attribute="true"; CREATE EDGE Purchase (FROM User, TO Item, purchase_date DATETIME, price DOUBLE); CREATE EDGE Rate (FROM User, TO Item, rating DOUBLE, comment STRING); CREATE EDGE View (FROM User, TO Item, view_date DATETIME); CREATE VERTEX User (PRIMARY_ID id STRING, username STRING) WITH primary_id_as_attribute="true"; CREATE VERTEX Order (PRIMARY_ID id STRING, total_amount DOUBLE, payment_method STRING) WITH primary_id_as_attribute="true"; CREATE EDGE Make (FROM User, TO Order, make_date DATETIME); CREATE EDGE Pay (FROM User, TO Order, payment_date DATETIME); CREATE EDGE Refund (FROM User, TO Order, refund_date DATETIME); CREATE EDGE Return (FROM User, TO Order, return_date DATETIME); CREATE VERTEX Supplier (PRIMARY_ID id STRING, name STRING) WITH primary_id_as_attribute="true"; CREATE VERTEX Product (PRIMARY_ID id STRING, name STRING) WITH primary_id_as_attribute="true"; CREATE EDGE Supply (FROM Supplier, TO Product, supply_date DATETIME, price DOUBLE); CREATE EDGE Purchase (FROM Product, TO Supplier, purchase_date DATETIME, quantity INT);