System Analysis and Design Midterm

Of the measures of feasibility in the accompanying figure, ____ considers questions such as "Does management support the project?" and "Will the new system require training for users?"

Operational feasibility

When an information system does not meet business requirements, causes might include ____.

a. unidentified requirements b. inadequately defined scope c. imprecise targets -d. all of the above

A DFD shows ____.

a. what the system does b. how data moves through an information system c. how a system transforms input data into useful information -d. all of the above

In a use case diagram, the user becomes a(n) ____, with a specific role that describes how he or she interacts with a system.

actor

An object belongs to a group or category called a(n) ____.

class

A(n) ____ table shows a logical structure, with all possible combinations of conditions and resulting actions.

decision

A _____ cannot be started until one or more other tasks are completed

dependent task

Of the measures of feasibility in the accompanying figure, ____ assesses tangible and intangible benefits to the company in addition to costs.

economic feasibility

When building an information system, all of the following basic guidelines should be considered except ____.

ensure that users are not involved in the development process

Because diagram 0 is a(n) ____ version of process 0, it shows considerably more detail than a context diagram.

exploded

For a project manager, monitoring _____.

includes monitoring the progress of the project, evaluating results, and taking corrective action when necessary to stay on target

In a class diagram, each class appears as a(n) ____, with the class name at the top, followed by the class's attributes and methods.

rectangle

To evaluate ____, a systems analyst needs information about projected future volume for all outputs, inputs, and processes.

scalability

A(n) ____ diagram shows the timing of interactions between objects as they occur.

sequence

Knowledge management systems are called expert systems because they ____

simulate human reasoning by combining a knowledge base and inference rules that determine how the knowledge is applied

The ____ phase of the SDLC includes four main activities: requirements modeling, data and process modeling, object modeling, and consideration of development strategies.

systems analysis

The primary advantage of RAD is that ____.

systems can be developed more quickly with significant cost savings.

Systems development typically starts with a ____.

systems request, followed by a preliminary investigation, which includes a feasibility study

Of the measures of feasibility in the accompanying figure, ____ considers points such as "Does the proposed platform have sufficient capacity for future needs?" and "Will the hardware and software environment be reliable?"

technical feasibility

In launching a new information system, the greatest risk occurs when a company ____.

tries to decide how the system will be implemented before determining what the system is supposed to do

Examples of tangible benefits include all of the following except a(n) ____.

user-friendly system that improves employee job satisfaction

The data dictionary usually records and describes a default value, which is the ____.

value for the data element if a value otherwise is not entered for it

____ are characteristics that describe the object

Attributes

PERT/CPM is called a(n) ____ technique, because it analyzes a large, complex project as a series of individual tasks.

Bottom-up

A ____ path includes all tasks that are vital to the project schedule.

Critical

A ____ is a command that tells an object to perform a certain method.

Message

____ is a systems development technique that produces a graphical representation of a concept or process that systems developers can analyze, test, and modify

Modeling

Transaction processing (TP) systems ____

Process data generated by day-to-day business operations

____ is a systems development technique that tests system concepts and provides an opportunity to examine input, output, and user interfaces before final decisions are made.

Prototyping

Structured analysis is a traditional systems development technique that uses a series of phases, called the ____, to plan, analyze, design, implement, and support an information system.

SDLC

Of the measures of feasibility in the accompanying figure, issues that relate to ____ include "Has management established a firm timetable for the project?" and "Will a project manager be appointed?"

Schedule feasibility

____ planning is the process of identifying long-term organizational goals, strategies, and resources.

Strategic

____ is a widely used method of visualizing and documenting an information system

UML

Supporters of neutral locations for interviews believe that it ____.

keeps interruptions to a minimum so people can concentrate fully

In data and process modeling, a(n) ____ model shows what the system must do, regardless of how it will be implemented physically.

logical

An object's ____ are the tasks or functions the object performs.

methods

In addition to tasks, every project has ____, which are reference points used to monitor progress and manage the project.

milestones

Greater user involvement in the system development process usually results in ____.

more satisfied users

A spontaneous generation process is a process that has ____.

no input

A black hole process is a process that has ____.

no output