Which of the following (regarding the relation ENROLLMENT) represents the deletion anomaly?
A) Deleting a student ID may delete a student name
B) Deleting a class ID may delete the class name
C) Deleting a class may delete all information about a student
D) Deleting a student may delete all information about a class
Ans: D) Deleting a student may delete all information about a class
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A local church formed a special committee to provide aid to the homeless in its community. The church applied to the municipal and provincial governments for funding but was denied when it could not adequately state what services it would offer. In this case, why did the special committee fail?
a. It had not defined its sponsoring organizations. b. It had not defined its product offering. c. It had not defined its donor market. d. It had not defined its user market.
Which of the following is true of the value densities of products?
A) The cost of transporting goods with high value-density ratios is high relative to their value. B) Products with high value-density ratios are integrated into the manufacturing process at points close to their original locations. C) Most commodities, including cement, iron ore, and crude oil, have high value-density ratios. D) The lower a product's value density, the more localized the distribution system.