Is this correct? Why or why not?

Raw materials are supplied by vendors. the identifier for a vendor is Vendor ID. Other attributes include vendor Name and Vendor Address. Each raw material can be supplied by one or more vendors. A vendor may supply any number of raw materials or may not supply any raw materials. Supply Unit Price is the unit price a particular vendor supplies a particular new material RAW MATERIALS Supplies VENDORS Material ID Unit of Measure Material Name Material Standard Unit cost Vendor ID Name Address Supply Unit Price