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ALTER SESSION SET NLS_DATE_FORMAT = 'YYYY-MM-DD HH24:MI:SS';
CREATE TABLE product (ProductCode VARCHAR2(10) PRIMARY KEY);
CREATE TABLE color (ColorCode VARCHAR2(10) PRIMARY KEY);
CREATE TABLE Inventory ( InventoryNumber INT PRIMARY KEY, ProductCode VARCHAR(10), ColorCode VARCHAR(10), "Size" VARCHAR(10) NOT NULL, Price DECIMAL(10,2) NOT NULL, QuantityOnHand INT NOT NULL, CONSTRAINT CHK_Inventory_Size CHECK ("Size" IN ('S', 'M', 'L', 'XL', 'XXL')), CONSTRAINT CHK_Inventory_Price CHECK (Price <= 9999.99), CONSTRAINT CHK_Inventory_QuantityOnHand CHECK (QuantityOnHand >= 0), CONSTRAINT FK_Inventory_Product FOREIGN KEY (ProductCode) REFERENCES Product(ProductCode), CONSTRAINT FK_Inventory_Color FOREIGN KEY (ColorCode) REFERENCES Color(ColorCode), UNIQUE (ProductCode, ColorCode, "Size") );