rder$\_$id: $($Int$32)$ Unique identifier for each order.

order$\_$date: $($Date$)$ Date and time when the order was placed.

sku: $($String$)$ Stock$-$keeping unit, a unique identifier for each product.

color: $($String$)$ Color of the product.

size: $($String$)$ Size of the product.

BIG DATA SYSTEMS