Reference no: EM132261211

1.Asking system users and business managers, "What are the subjects of the business?" would help determine:

integrity rules, minimum and maximum cardinality, and time dimensions of data. , the data entities and their descriptions. , attributes and secondary keys. relationships and their cardinality and degrees. , the candidate key.

2. good number of alternatives to generate is five.

True

False

3.A particular approach to developing an information system best describes:

design strategy, systems service request., problem statement. , scope., requirements statement

4.A multivalued attribute is an attribute that may take on more than one value for each entity instance.

True

False

5.An ideal number of alternatives to generate is:

5. 7. 2. 3. 4.

When selecting an identifier, one should choose a candidate key that will not change its value over the life of each instance of the entity type.

True/false

Question 7

In theory, if there are four sets of requirements, three implementation environments, and four sources of application software, then there would be thirty-six possible design strategies.

True/false

8.Analysts should consider substituting single-attribute surrogate keys for large composite keys.

True/false

Question 9

Conceptual data modeling for an Internet-based electronic commerce application differs significantly from the process followed when analyzing the data needs for other types of applications.

True/false

Question 10

Which of the following is a true statement regarding high-end alternatives?

a. High-end alternative design strategies often do not involve computer technology; instead they focus on making paper flows more efficient or reducing redundancies in current processes.

b. High-end alternative design strategies represent compromise solutions.

c. Functionality is the primary focus of high-end alternative design strategies.

e. High-end alternative design strategies provide all the required functionality users demand with a system that is minimally different from the current system.

f.one of these are correct.