Fundamentals Of Database Management Systems 2nd Edition Mark L. Gillenson - Solutions

Describe the concept of the unary relationship.
Explain how a unary relationship can be described as one-to-one, one-to-many, and many-to-many if only one entity type is involved in the relationship.
Invent a fictitious company in one of the following industries and describe the relationship between data as a corporate resource and the company’s other corporate resources.a. Bankingb. Insurancec. Manufacturingd. Airline
Invent a fictitious company in one of the following industries and list several ways in which the company can use data to gain a competitive advantage.a. Bankingb. Insurancec. Manufacturingd. Airlines
What did the Middle Eastern shepherds’ pebbles and sacks, Pascal’s calculating device, and Hollerith’s punched-card devices all have in common?
What did the growth of cities have to do with the need for data?
What did the growth of trade have to do with the need for data?
What did Jacquard’s textile weaving device have to do with the development of data?
Choose what you believe to be the:a. One most importantb. Two most importantc. Three most important landmark events in the history of data. Defend your choices.
Do you think that computing devices would have been developed even if specific data needs had not come along? Why or why not?
List several problems in storing and accessing data in today’s large corporations. Which do you think is the most important? Why?
How important an issue do you think data accuracy is? Explain.
How important a corporate resource is data compared to other corporate resources? Explain.
What factors led to the development of database management systems?
Draw a timeline showing the landmark events in the history of data from ancient times to the present day. Do not include the development of computing devices in this timeline.
Draw a timeline for the last four hundred years comparing landmark events in the history of data to landmark events in the development of computing devices.
Draw a timeline for the last two hundred years comparing the development of computing devices to the development of data storage media.
Describe the ternary relationship concept.
What is a dependent entity? (See the description in the General Hardware example.)
Can a ternary relationship have intersection data?Explain.
What is data? Do you think the word ‘‘data’’ should be treated as a singular or plural word? Why?
Describe the circumstances in which a subquery must be used.
What did the need for data among ancient Middle Eastern shepherds have in common with the need for data of modern corporations?
What is intersection data in a many-to-many binary relationship? What does the intersection data describe?
Name some entities and their attributes in a university environment.

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