Using the INVOICE table structure shown in Table P6.3, do the following: a. Write the relational schema, draw its dependency diagram, and identify all dependencies, including all partial and transitive dependencies. You can assume that the table does not contain repeating groups and that an invoice number references more than one product. (Hint: This table uses a composite primary key.) b. Remove all partial dependencies, write the relational schema, and draw the new dependency diagrams. Identify the normal forms for each table structure you created. Note: You can assume that any given product is supplied by a single vendor, but a vendor can supply many products. Therefore, it is proper to conclude that the following dependency exists: PROD_NUM S PROD_lABEl, PROD_PRICE, vEND_CODE, vEND_NAME (Hint: Your actions should produce three dependency diagrams.) c. Remove all transitive dependencies, write the relational schema, and draw the new dependency diagrams. Also identify the normal forms for each table structure you created. d. Draw the Crow's Foot ERD. To upload and submit your assignment, click the Choose File button below to find and select your saved document. Make sure that the file is saved with your last name in the file name. (Example: ch6_problem1_Jones.doc)

Question

Using the INVOICE table structure shown in Table P6.3, do the following:

a. Write the relational schema, draw its dependency diagram, and identify all dependencies, including all partial and transitive dependencies. You can assume that the table does not contain repeating groups and that an invoice number references more than one product. (Hint: This table uses a composite primary key.)

b. Remove all partial dependencies, write the relational schema, and draw the new dependency diagrams. Identify the normal forms for each table structure you created.

Note: You can assume that any given product is supplied by a single vendor, but a vendor can supply many products. Therefore, it is proper to conclude that the following dependency exists:

PROD_NUM S PROD_lABEl, PROD_PRICE, vEND_CODE, vEND_NAME

(Hint: Your actions should produce three dependency diagrams.)

c. Remove all transitive dependencies, write the relational schema, and draw the new dependency diagrams. Also identify the normal forms for each table structure you created.

d. Draw the Crow's Foot ERD.

To upload and submit your assignment, click the Choose File button below to find and select your saved document. Make sure that the file is saved with your last name in the file name. (Example: ch6_problem1_Jones.doc)

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