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database exercise
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Asked: Mar 20th, 2018
account_balance_wallet
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Question Description
Review question 14.17 and 14.18 on page 429 – 430 of the Connolly textbook as background for the below question.
Then, using the information in the figure below, answer the following questions.
Assume that we only want to record the last sale of each car. Each car can be sold to only one customer; however, each customer can buy more than one car.
a) Describe functional dependency – Hint – review the Functional Dependencies Topic in the Terms and Concepts forum. While you may incorporate formal definitions, you must include plain English content to explain the concept and how it applies to the fields in this exercise.
Using the functional notation shown on pages 412, 413 Examples 14.4, 14.5, identify the functional dependencies that exist in the above figure. All attributes should be included at least once. There may be more than one row of functional notation needed.
b) Identify a primary key for the table in the above figure and indicate whether there are any alternate keys – explain your choices.
c) Is the table in 3NF? If not, explain why – (you must provide specific rationale, using field names and values in the table to demonstrate your understanding). Explain what normal form the existing table is in.
Include each question with your answer. Submit a Word compatible document. Name your document Last Name_Assignment6 (i.e. Smith_Assignment6).
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