TABLE 4-7 Pine Valley Furniture Company Purchasing Data Attribute Name Sample Value Material ID 3792 Material Name Hinges 3" locking Unit of Measure each Standard Cost $5.00 Vendor ID V300 Vendor Name Аpех Нardware Unit Price $4.75 Terms Code 1 Terms COD
The ma terials manager at Pine Valley Furniture Company ma intains a list of suppliers for each of the material
items purchased by the company from outside vendors.
Table 4-7 shows the essential d ata required for this application.
a. Draw a dependency d iagram for this data. You may
assume the following:
• Each material item has one or more suppliers. Each
supplier may supply one or more items or may not
supply any items.
• The unit price for a ma terial item may vary from one
vendor to another.
• The tem1s cod e for a supplier uniquely identifies the
terms of the sale (e.g., code 2 means 10 percent net
30 days). The terms for a supplier are the same for
all ma terial items ordered from that supplier.
b. Decompose this d iagram into a set of d iagrams in 3NF.
c. Draw an E-R d iagram for this situation.
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