Questions from Database Management

Q: State the differences between a term and a fact.

State the differences between a term and a fact.

Q: What is the need for time stamping in modeling time dependent data

What is the need for time stamping in modeling time dependent data?

Q: Define each of the following terms: a. supertype

Define each of the following terms: a. supertype b. subtype c. specialization d. entity cluster e. completeness constraint f. enhanced entity-relationship (EER) model g. supertype/subtype hierarchy h....

Q: Give an example of generalization not discussed in the text.

Give an example of generalization not discussed in the text.

Q: How are the attributes assigned in a supertype/subtype hierarchy?

How are the attributes assigned in a supertype/subtype hierarchy?

Q: In what ways is starting a data modeling project with a packaged

In what ways is starting a data modeling project with a packaged data model different from starting a data modeling project with a clean sheet of paper?

Q: Purchasing a packaged data model involves mapping. What is mapping?

Purchasing a packaged data model involves mapping. What is mapping? What are the points you need to consider in mapping?

Q: Does a data modeling project using a packaged data model require less

Does a data modeling project using a packaged data model require less or greater skill than a project not using a packaged data model? Why or why not?

Q: Discuss how it is decided which subtype will be inserted with a

Discuss how it is decided which subtype will be inserted with a new instance of a supertype.

Q: Martin is encouraged by the progress you have made so far.

Martin is encouraged by the progress you have made so far. As promised, he forwards you an email from one of the key members of his staff, Pat Smith (an artist manager). He also provide you with an e-...