INFO 6210 Data Management and Database Design Week 2 HW FanyaMa 001386580Chapter 2 1. Answer the following questions concerning Figure 2-22:a. Where is a unary relationship, what does it mean, and for what reasons might the cardinalities on it be different in other organizations?
b. Why is Includes a one-to-many relationship, and why might this ever be different in some other organization?
c. Does Includes allow for a product to be represented in the database before it is assigned to a product line (e.g., while the product is in research and development)?
d. If there is a rating of the competency for each skill an employee possesses, where in the data model would we place this rating?