CIS 3343 : CH 8-15

advantages of using a logical model

A) A system based on a logical model is more stable.B) The logical model helps the analyst understand the business being studied.C) It facilitates communication with the users.

In order to build decision tables, what does the analyst need to do

A) Eliminate any impossible situations. B) Simplify the table as much as possible. D) Eliminate inconsistencies.

advantage of using the physical model

A) Transaction data stores are identified. C) The sequence of processes is identified. D) Controls are included.

What are ways to help you design a general purpose web site intended for the average user

A) Use professional tools. B) Study other Web sites. C) Examine the Web sites of professional designers. E) Create templates of your own.

What is contained in the repository

A) procedural logic B) use cases D) screen and report design

The data dictionary may be used to create

A) screens. B) reports. C) forms.

What needs to be considered when building a website

A) structure C) graphics D) navigation E) promotion

__ is a flaw in the system design that is detected by analyzing the data dictionary entries

All base elements on an output data flow must be present on a data flow into the process

When drawing the tree, systems analysts have to identify:

B) all actions. C) the order. D) all conditions.

Four basic smybols used to chart data movement on a dfd

B) arrow C) rectangle with rounded corners D) open-ended rectangle

Three main advantages of a decision tree over a decision table

B) sequential structure of decision tree branches C) conditions and actions of decision trees are found on some branches D) more readily understood

Process description may exist on a form or within a __ repository

CASE tool

Which of the following is a rule of thumb used to make the dashboard more attractive and more effective

Choose appropriate performance measures for display.

When creating process specifications, what needs to be done for manual tasks

Create well-defined procedures for employees performing the tasks.

When iteration is indicate for an element or a group of elements in the data dictionary

DO WHILE, DO UNTIL, or PERFORM UNTIL structured English statements must be included.

Every web site should include a(n) __ page

FAQ (Frequently Asked Questions)

__ apps are offered at no cost for basic features but allow in-app purchases for premium features and functionalities

Freemium

__ apps are intended for professionals and are often iPad version of desktop software

Premium

__ are created for primitive processes on a data flow diagram

Process specifications

In general, if many people need copies of output, which of these is the best alternative

Web based documents

Characteristics of the ideal data dictionary

automated interactive online evolutionary

Which of the following is included in a physical data structure

codes that identify the status of a master record

Which is all about communicating measurements to the user

dashboards

What is a reference work of data about data compiled by system analysts

data dictionary

__ depicts the broadest possible overview of system inputs, processes, and outputs

data flow diagrams

A __ is composed of related elements

data structure

Which is a way to examine, describe, and document structured decisions

decision table

An external entity is called a source or __ of data, and is considered to be external to the study

destination

If outputs is to be frequently accessed, which is the best alternative

display screen or Web

By using combnations of only four symbols, the system analyst is able to create a pictorial depiction of data flows that eventually can provide a solid system ___

documentation.

The symbol X(8) represents

eight alphanumeric characters.

What does this symbol represent [ ]

either or situation

The process of creating a simple dfd fragment for each unique system trigger is called

event modeling.

Reports showing data that matches certain conditions known as __ reports

exception

Reports that describe output produced when certain conditions occur

exception

Which type of report prints a line for all records that match a set of conditions

exception

A network that includes clients, vendors, and suppliers is called an

extranet

When determining the length for elements

figure the amount of a numeric element and add a few characters for reasonable expansion

Sometimes it is advisable to offer a __ app if there are numerous other apps with similar functionalities

free

Problems when creating a decision table

impossible situations redundancy contradictions

Which of the following is a goal of dividing a web site into a series of web pages

improve the ease of maintaining the Web site

Physical data flow diagram

include processes for adding, updating, changing and deleting records.

A data flow that contains data that are used between process is called

internal

Input which stays within the business is called

internal input

A logical data flow diagram

is a model of how the business operates.

Running a section of code over and over again until some condition is met is an example of a:

loop

Since a single data flow may only show part of the collective data

many data flows may have to be examined to determine the contents of a data store.

Transaction files

may be used to link processes that execute at different times.

Process specifications are sometimes called ________, because they are a small portion of the total project specifications

minispecs

Elements on a data flow going into or out from a data store

must be contained in the data store.

Structured english can be more complex if blocks of (instructions) are __ within each other to show hierarchy

nested

In order to determine the human information requirements using a decision analyst strategy, what must the system analyst determine

objectives

Ajax is used to

obtain data from a Web server and update the current Web form

Unlike the decision tree used in management science, what does the analyst's tree contain

outcomes

Not a characteristics of display screen output

portable

Common orientations for smart phones and tablets

portrait and landscape

What is involved in creating an app for a mobile phone or tablet

printing screen designs as a submission requirement

One of the goals of producing ________ is to validate the system design, including the data flow diagram and the data dictionary.

process specifications

Primitive process specifications are produced for:

processes that use decision trees. processes that involve complex editing

Not Business rules

programming language IF statements

Braces {} are used to indicate

repetitive elements

A __ is a large collection of information that is lager than a dat dictionary

repository

A __ is one that is contained within a larger data structure and consists of further subdivisions

repository

Partitioning on a data flow diagram for an ecommerce web site may be used to show

security

Defining a narrow range for information output in an exception report is an example of bias through

setting limits

Planning the ________ of a Web site is one of the most important steps in developing a professional Web site.

structure

When structured decisions are not complex, an appropriate technique for analyzing the decision process is the use of ________.

structured English

Process logic may be represented a

structured English, a decision table., a decision tree, a formula.

A use case

summarizes an activity, its trigger, input, and output.

The data flow approach enables the system analyst to better understand the interrelatedness of __ and __

systems; subsystems

Having separate web forms to collect transaction data means that

the forms are less complex and easier to fill out.

Each time an external company or system is involved

the process involved needs to be partitioned into a separate program

Reasons for partitioning a system

to keep transactions secure

A __ document is output for one stage of processing before serving as input for the next stage

turnaround

Which of these servers as both input and output

turnaround documents

When the data flow in and out of a parent process do not match the data flow in or out of a child diagram, it is called

unbalanced decomposition.

The advantage of building dfd based on events is that

users are familiar with the events within their business and know how the events drive other activities.

A goal of producing process specifications is to

validate the system design, including data flow diagrams and the data dictionary.

Goals of producing a process specification

validate the system design, including data flow diagrams and the data dictionary.

A base element is one that

was initially keyed into the system.

output can alleviate some problems with the timing of output distribution

web based

A crud matrix is used to show

where records are updated, added, deleted or used.

A(n) __ is a synonym or another name for the element, used by different users of systems

alias

Data stores are used to store

all base elements and some derived elements.

When selection is indicated for elements in the data dictionary

an IF...THEN...ELSE structure must be present in the structured English statements.

What become(s) important for large systems that produce several thousand data elements requiring cataloging and cross-referencing?

automated data dictionaries

__ is usually the first component to be stored in the data dictionary

data flow

A method that provides conceptional freedom for representing processes and flows in a business system is the

data flow diagram.

Which graphically characterizes data processes and flows through a business system

data flow diagrams

what is a form of electronic output

fax, email, bulletin board messages

A derived element is one that

is created by processes as a result of calculations or a series of decision-making statements.

a varchar data type

is used for data that can contain any number of characters (up to the database limit).

In a decision table, contradictions occur when

rules suggest different actions but satisfy the same conditions.

Guideline for display screen design

- available on a more flexible schedule - can be more targeted to the user - can be changed through direct interaction - ephemeral

What focuses on the relationship between the system analyst and the user with respect to output

-creating flexible output - interactive design - informing those concerned with output's biases

Three basic constructs used to code computer programs

-sequence is the order in which instructions occur and are processed. -selection determines which path a program takes when it is running. -iteration is the repeated execution of a section of code when a program is running.

In order to use structured English, which convention is advisable

A) Express all logic in terms of sequential structures, decision structures, case structures, or iterations. C) Use and capitalize accepted keywords such as IF, THEN. D) Be careful when using "and" and "or."

Examples of a keyword for structured English

A) IF B) DO C) PERFORM

What is the objective of designing output

A) Provide appropriate output distribution. B) Choose the most effective output method. C) Design output to serve a specific purpose. D) Provide the output on time.

what may be created by transforming an XML document

A) a Web page B) a portable document format (PDF) file C) output for a handheld device

errors when drawing a data flow diagram

A) all data flowing into a process or out of a process C) connecting data stores and external entities directly to each other D) placing more than nine processes on a data flow diagram

Which of these sorting procedures can introduce into information

A) alphabetical B) chronological C) cost

What is a typical type of widget

A) clocks C) translators D) sticky notes

A default value on a GUI screen may be used for

A) drop-down lists. B) radio buttons. C) check boxes.

Type of biases introduced unintentionally during output presentation

A) how information is sorted C) choice of graphics D) setting of acceptable limits

Main problems that can occur in developing decision tables

A) incompleteness B) impossible situations C) contradictions

What is structured english based on

A) instructions organized into nested and grouped procedures B) simple English statements D) add, multiply, move, and so on

Which of the following is a business rule?

A) logical inferences B) mathematical and functional derivations D) definitions of business terms

What is included in an XML document type definition

A) the number of times an element repeats B) an element that is optional D) the attributes of an XML element

reasons for partitioning process into separate programs

A) the processes represent different user groups B) the processes execute at different times C) to control system security

A primitive process is

a process that is not exploded to a child diagram.B) the central process on a context level diagram.

Which of the following is a more precise way to define the content of an XML document

a schema

What should be created each time data must be obtained from an external partner

a unique Web form and DFD process to validate and process the data

Data structures are describes using __ notation

algebraic

An analyst may develop the dfd using a top down method by using

algebraic notation and structural records.

A synonym or other name for an element is called a(n)

alias