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ISDS 406.,.,. questions and answers certified 2024
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ISDS 406.,.,. questions and answers certified 2024
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ISDS 406; Midterm 1; Chap. 4Actor - correct answer ✔The actor refers a person, another software system,
or a hardware device that interacts with the system to achieve a useful goal.
Some organizations use the term user role rather than actor because there
may be several different user groups who interact with the system in the same
way.
Business scenario - correct answer ✔At one time, organizations applying
traditional system development techniques used what were called business
scenarios to describe user interactions with the system, while organizations
applying object-oriented techniques (see Chapter 14) used what were called
use cases. At present, these distinctions have largely disappeared and the
term use case is widely accepted.
Essential use cases - correct answer ✔Use cases written to depict the user-
system interactions as abstract, technology-independent steps.
Event - correct answer ✔triggers actions performed by the system and the
user
Event-driven modeling - correct answer ✔everything in the system can be
thought of as a response to some triggering event; When a trigger event
occurs, the system (and the people using it) responds, performs the actions
defined in the use case, and then returns to the waiting state.
External trigger - correct answer ✔A trigger can be an external trigger, such
as a customer placing an order, the fire alarm ringing, or in our example, the
LCA needing a chemical for a job.
, Fully dressed use case - correct answer ✔The use case is very thorough,
detailed, and highly structured.
Happy path - correct answer ✔Another term for the Normal Course; The
normal course lists the steps that are performed when everything flows
smoothly in the system.
input - correct answer ✔Something put into a system, such as resources, in
order to achieve a result; The final section of the use case summarizes the set
of major inputs and outputs to the steps of the use case. Each of the major
inputs and outputs to the use case are listed, along with its source or
destination. These are all possible inputs and outputs, not just those that are
part of the normal course.
Iteration - correct answer ✔the repetition of a process or utterance;
Regardless of whether interviews or JAD sessions are used, research shows
that some ways to gather the information for use cases are better than others.
The most effective process has four steps (Figure 4-5). These four steps are
performed in order, but, of course, the analyst often cycles among them in an
iterative fashion as he or she moves from use case to use case.
4 STEPS:
1) Identify the use cases
2) Identify the major steps w/in each use case
3) Identify elements w/in steps
4) Confirm the use case
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