/*
Table: internalSKUs

Columns:
    our_sku int
    vendor_sku varchar
    vendorID int
    upc varchar

Depends on:
    vendorItems (table)
    products (table)

Use:
Internal SKUs, sometimes also called "order codes",
are a shorthand for identifying items. They're
typically shorter than product UPCs and thus easier
to type. They may also be helpful if a vendor does
not provide SKUs or UPCs. As of 30Aug13, internal SKUs
are an optional feature and simply another means of
searching for & identifying items.
*/