If the query described in Question 10 runs too slowly, what would you do? Question 10 Using
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If the query described in Question 10 runs too slowly, what would you do?
Question 10
Using the Physical Data Model in Figure 3.2, describe the sequence of tables to be accessed in order to show, for an advertised item, the available suppliers for each that have a customer rating of “4” or better.
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Customer **CustomerIdentifier Customer TelephoneNumber CustomerName CustomerStreetAddress CustomerCity CustomerState CustomerZipCode CustomerCredit Rating CustPreferredCredit Card Order **OrderNumber Customeridentifer Ordered Item **OrderNumber **ItemNumber OrderDate Shipping Street Address Shipping City Shipping State Credit Card **Customer Credit CardNumber Customer Credit CardName Advertised Item **ItemNumber ItemDescription ItemDepartment Item Weight ItemColor ItemPrice LowestPrice LowestPriceSupplier QuantityOrdered Selling Price ItemShipping Date ShippingZipCode CustomerCredit CardNumber OrderShippingDate Order TotalCost CustomerIdentifier PreferredOption FIGURE 3.2 The physical data model. Supplier **SupplierID Supplier Name Supplier Street Address SupplierCity Supplier State Supplier ZipCode Restock_Item **SupplierID **ItemNumber ReorderPrice
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