13 Jan Midrange alternative

Week 4 quiz

1.Question :(TCO 5) Which of the following is a true statement?

Data characteristics are dynamic.

A data model explains the transient form of an organization.

An information system design based on a data orientation, rather than a process or logic orientation, should have a longer, useful life.

Data flow paths are permanent.

A data model graphically represents the processes that capture, manipulate, store, and distribute data between a system and its environment and among components within a system.

Question 2. (TCO 5) A detailed, logical, and graphical representation of the entities, associations, and data elements for an organization or business area best describes a(n)

logic model.

data-flow diagram.

entity-relationship diagram or E-R diagram.

structure chart.

data tree.

Question 3. (TCO 5) A collection of entities that share common properties or characteristics best defines

entity type.

entity instance.

entity occurrence.

entity collection.

data set.

Question 4. (TCO 5) An association between the instances of one or more entity types that is of interest to the organization best defines

an occurrence.

a relationship.

a natural connection.

a cardinality.

an entity link.

Question 5. (TCO 5) The number of entity types that participate in a relationship refers to

cardinality.

an association.

a count.

a degree.

normalization.

Question 6.(TCO 5) A relationship between instances of two entity types is a

unary relationship.

binary relationship.

ternary relationship.

multiple occurrence.

partnership occurrence.

Question 7. (TCO 5) If entity B is a mandatory participant, then

the minimum cardinality of the relationship is two.

the minimum cardinality of the relationship cannot be defined.

the minimum cardinality of the relationship is one.

the minimum cardinality of the relationship is optional.

the join level is not null.

Question 8. (TCO 6) During which of the following steps will you bring the current phase to a close, prepare a report and presentation to management concerning continuation of the project, and get ready to move the project into design?

Designing the human interface

Requirements determination

Project initiation and planning

Alternative generation and selection

Requirements structuring

Question 9. (TCO 6) Which of the following is a true statement regarding midrange alternatives?

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

Midrange alternative design strategies represent compromise solutions.

Functionality is the primary focus of midrange alternative design strategies.

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

Midrange alternative design strategies provide all the desired features using advanced technologies that often allow the system to expand to meet future requirements.

Question 10. (TCO 6) The most conservative solutions in terms of the effort, cost, and technology involved in developing a new system are the

low-end solutions.

high-end solutions.

midrange solutions.

constraint-dependent solutions.

requirements-dependent solutions.