Question: Suppose that someone tells you that an attribute that is
Suppose that someone tells you that an attribute that is part of a composite primary key is also a candidate key. How would you respond to that statement?
Answer to relevant QuestionsWhen is a table in BCNF?Using the descriptions of the attributes given in the figure, convert the ERD shown in Figure P6.1 into a dependency diagram that is in at least 3NF.Use the dependency diagram shown in Figure 6.8 to work the following problems.a. Break up the dependency diagram in Figure 6.8 to create two new dependency diagrams, one in 3NF and one in 2NF.b. Modify the dependency ...Explain why the two following commands produce different results.SELECT DISTINCT COUNT (V_CODE) FROM PRODUCT;SELECT COUNT (DISTINCT V_CODE) FROM PRODUCT;Write a query to display the rental number, rental date, movie title, and detail fee for each movie that was returned on or before the due date (result shown in Figure).
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