ocr: Figure 3. A Physical Persistence, Model Using the UML Class Diagram Notation Urder Orderitem, Stockitem orderNumber: orderdate:Date : inteper: <<S <<PRS> PorterNumber stockNember: : : Integer integer << <<PKs2x<fk> <IS> price: stockaumber: Float integer <<PK> shepmentDate: a Date extendedPricesFloat stocklevel: Integer paymentDate: Date insertinagen) reorderLevel:l Integer deliverto - String <<SK>> deleteTriggert) aabe <strece> <<trace>? <SIGCEP? Backordereditems <<SP>> Reorderitems<<SP>> (The indert for ther secondary key is used only fort the *getackordereditemso gelkeoroerstocNlemsD monthly ...