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1. To keep track of sales, ABC Incorporated, an on-line company, uses the table structure shown below. Assuming that the sample data are representative, draw a dependency diagram in Visio that shows all functional dependencies including both partial and transitive dependencies. (Hint: Look at the sample values to determine the nature of the relationships.) Attribute Name Sample Value Sample Value Sample Value Sample Value Sample Value INV_NUM 211347 211347 211347 211348 211349 PROD_NUM AA-E3422QW RU-995748G AA-E3422QW GH-778345P SALE_DATE 15-Jan-2006 QD-300932X 15-Jan-2006 0.25-in. drill bit 15-Jan-2006 15-Jan-2006 16-Jan-2006 Band saw Power drill 211 309 157 PROD_LABEL VEND_CODE VEND_NAME QUANT_SOLD 1 PROD_PRICE Rotary sander 211 NeverFail, Inc. 8 Rotary sander 211 NeverFail, Inc. 2 | NeverFail, Inc. BeGood, Inc. 1 $39.99 ToughGo, Inc. 1 $49.95 $3.45 $49.95 $87.75 2. Using the initial dependency diagram drawn in question 1, remove all partial dependencies, draw the new dependency diagrams in Visio, and identify the normal forms for each table structure you created. 3. Using the table structures you created in question 2, remove all transitive dependencies, and draw the new dependency diagrams in Visio. Also, identify the normal forms for each table structure you created. If necessary, add or modify attributes to create appropriate determinants or to adhere to the naming conventions. 4. Using the results of question 3, draw the fully labeled Crow's Foot ERD in Visio. The diagram must include all entities, attributes, and relationships. Primary keys and foreign keys must be clearly identified on the diagram