Sale Invoice ALE Consists of PRODUCT Produd ID Produ Dscrioton $1$transaction Sells Includes $1$ne item Used in Item Sale Involce Item NVOICE line item O$.$n REC PE Vendor ID Orders Ped item sold $1$ Product Inventory Item Billed Requested Ordered NVENTORYITEM ORDER Type of tam Recipe Figure $2$: ERD of Figure $1$ Figure $1$: Class Diagram