System Analysis and Design (Prelim)

158 cards

REFERENCES:Chapter 1: System Analysis and DesignBy: Shelly Cashmanand some notes from class :p


 
  
Created Jul 18, 2012
by
johannady2

 

 
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1
4 Ps and their techniques
 
> The product>The process>The project
>The problem
2
step by step activity of the process involved
 
Algorithm
3
Why is this course important?
 
>Most errors(54%) are detected after coding and testing
>Almost half of all the errors...
4
Is a set of inter-dependent compounds. (Some of which may be systems in their own right) which...
 
System
5
___ + ___+___ = information System
 
Information Base + Applications + interfaces = Information System
6
Differs from other kinds of systems in that its objectives is to monitor/document the operations...
 
Information System
7
can store, manage, and process large amounts of information for routine business transactions,...
 
Data Processing(DP)
8
4 main types of information systems
 
>Data Processing
>Inforamation Management
>Decision Support
> Expert System
9
Provide periodic reports for planning, control and decision making, e.g. , generate end-of-the-month...
 
Information Management
10
Support decision maker by providing information or demand, e.g. , an online system that combines...
 
Decision Support
11
Capture expertise of decision makers in interpreting information or solving problems and serve...
 
Expert System
12
An organized collection of logically related data.
By organize we mean that data are structured...
 
Database
13
may be of any size an d complexity
 
Data
14
Data that has been processed in such a way that it has meaning or relevance to the...
 
Inforamtion
15
Data that can be described with the characteristics of other data.
 
metadata
16
3 parts of metadata
 
>Data definition
>Data Structures
>Rules or constraints
17
2 parts of data structures
 
>Data type
>Data Size
18
3 types of Datatypes
 
>Character
>Alphanumeric>Numeric
19
4 Types of information Systems aside from
Data processing, information management, decision...
 
 >transaction processing system
>management information system>office information...
20
are event that serve the mission of the business.

 
business transaction
21
information system for business transactions.
 
Transaction processing System
22
office information system
 
are concerned with getting all relevant information to all those who need it.
23
blueprint for an IS in an organization
 
Information System Architecture
24
what does ISA stand for?
 
Information System Architecture
25
6 key components of Information System Architecture
 
>Data
>processes>network>people
>events and points in time>reasons
26
-provides a unifying framework into which various people with different perspectives can organize...
 
A framework for ISA
27
-stakeholders can be broadly classified in 4 groups;
 
>System Owners
>System Users
>System Designers
>System Builders
28
Different views of a system
 
>Contextual view>control view
29
illustrate a contextual view
 
sdadsad
30
illustrate a control view
 
dsadsad
31
The vast majority of systems are not made by people: they exist in nature and, by and large,...
 
NATURAL SYSTEMS
32
2 basic subcategories of natural System
 
>Physical System
>Living Systems
33
are interesting to study because as pesky humans, we sometimes want to modify them. We also...
 
Physical systems
34
encompasss all the myriad animals and plants arounds us, as well as our own human race.
 
Living systems
35
19 critical subsystems of living systems
 
>reproducer
>boundary
>ingestor
>distributor
>converter>producer
>matter-energy...
36
a number of systems constructed , organize and mainained by humans.
 
Man-made Systems
37
Why should some information processing systems not be automated?
 
>cost
> convenience
>security
>maintainability
>politics
>Inability...
38
man-made systems that interact with or are controlled by one or more computers
 
Automated Systems
39
components of an Information System
 
>Computer Hardware
>Computer Software
>people
>data
>Procedures/...
40
formal policies and instructions for Operating System
 
procedure
41
the information that the system remembers over a period of time
 
data
42
System programs such as OS, database systems and telecommunication control programs, plus application...
 
Computer software
43
CPUs, disks, terminals, printers, magnetic tape drives, and so on
 
Computer hardware
44
systems that came into being by natural process
 
Natural System
45
Systems in which human beings intervened through a component, attributes or relationships.
 
human made system/ man-made system
46
The process of developing a system or software to meet certain requirements. It covers many...
 
Structured development life Cycle(SDLC)
47
is a step-by-step process for developing high-quality information systems.
 
System Analysis and design
48
combines inforamtion technology, people and data to support business requirements
 
Information System
49
When a company develops its own information System, the system is called ____
 
In-home system
50
purchased systems from outside vendors
 
software packages
51
A system vital to a company's operations
 
Mission-critical system
52
Is data that has been transformed into output that is valuable to users.
 
information
53
is a set of related components that produces specific results.
 
System
54
consists of everything in the physical layer of the information system
 
Hardware
55
refers to the programs that control the hardware and produce the desired results.
 
Software
56
2 types of software
 
>System Software
>application software
57
is the raw material that an IS transform into useful information
 
data
58
the tasks and business functions that users, managers and IT staff members perform...
 
Processes
59
are the people who intract with an IS, both inside and outside the company
 
End users
60
include administrators, managers, technicians, sales staff and corporate officers.
 
internal users
61
include customers who trafck their orders on the company's website
 
External users
62
users who use a customer's system to plan their manufacturing schedules
 
suppliers
63
3 types of users:
 
>internal users
>external users
>suppliers
64
manages hardware components, which can include a single work station or a global...
 
System software
65
consists of programs that support day-to-day business functions and provide users...
 
Application software
66
2 types of Application Software;
 
>Horizontal System
>Vertical System
67
A system such as an inventory or payroll application that can be adapted for use in many different...
 
horizontal system
68
is designed to meet the unique requirements of a specific business or industry. such as  a...
 
Vertical System
69
used by system analysts to represent a company's operations and information
 
Business process modelling
70
is an overview that describes a company's overall functions, processes, organization, products,...
 
Business Profile
71
- make it easier for managers and system analysts to understand day-to-day business operations
 
business models
72
-it is a graphical representation of one or more business process that a company performs,...
 
Business model
73
Describes a specific set of transactions, events, tasks and results
 
business process
74
traditonal IT comapnies
 
>product oriented
>service oriented
75
New kinds of business
 
>Internet dependent
>brick-and-mortar companies
76
another name for internet dependent companies
 
dot-com(.com) company
77
its primary business depends on the internet rather than a traditional business channel....
 
Internet dependent / dot-com comapny
78
they conduct business for physical locations
Ex) Walmart, target
 
Brick-and-mortar comapanies
79
internet based commerce.
 
e-commerence(electronic commerence)
/I-commerence (Internet commerence)
80
Phases of system development life cycle
 
>preliminary study
>feasibility study
>detailed system study>system analysis>system...
81
2 main sectors of e-commerence
 
B2C (business to consumer)
B2B (business to business)
82
using the internet, consumers can go online to purchase an enormous variety of products and...
 
Business-to-consumer
83
The volume is many times greater.
It's transsactions are many times greater than B2C.
 
business to business
84
online trading marketplaces initially were developed as company-to-company data sharing arrangements....
 
Electronic Data Interchange (EDI)
85
Enabled company-to-company traffic to migrate to the internet which offers standard protocols,...
 
Extensible markup language
86
what does XML stand for?
 
Extensible mark-up langauge
87
B2B sites where buyers, sellers, distributors and manufacturers can offer products, submit...
 
Supplier relationship management
88
examples of internet based systems;
 
websphere and .Net
89
refers to information systems that support company-wide operations and data management
 
Enterprise computing System
90
Systems provide cost effective support for users and managers throughout the compnay
ex:)...
 
Enterprise resource planning(ERP)
91
Process data generated by day-to-dat business operations
 
Transaction process(TP) system
92
provide job related information to users at all levels of company.
 
Business support system
93
managers are the primary users.
 
management information systems (MIS)
94
uses high frequency radio waves to track physical objects, such as shipping cartons, by using...
 
Radio Frequency Identification(RFID)
95
are called expert systems because they simulate human reasoning by combining a knowledge base...
 
Knowledge management systems
96
consists of a large database that allows users to find information by entering a symptom, problem,...
 
knowledge base
97
logical rules that identify data patterns and relationship.
 
interface rules
98
used by many knowledge management systems. It allows inferences to be drawn from imprecise...
 
fuzzy logic.
99
examples include e-mail, voicemail, fax, video conferencing, word processing, automated calendars,...
 
User Productivity system
100
programs that run on a company intranet and enable users to share data , collaborate on projects,...
 
Groupware
101
defines a company's overall mission and goals
 
strategic plans
102
produces a graphical representation of a concept or process that systems developers can analyze,...
 
modelling
103
descrives he information that a system must provide
 
business mode/ requirement model
104
describes the data structure and design
 
data model
105
ascribes objects which combine data and processes.
 
object model
106
describes the design and protocols of telecommunication links.
 
network model
107
describes the logic that programmers use to write code modules.
 
Process model
108
Is an early working version of an information system
 
prototype
109
Computer-aided system engineering is also called?
 
computer-aided software engineering
110
is a technique that uses powerful software called CASE tools, to help systems analysts develop...
 
Computer-aided systems engineering
111
provide an overall framework for system development and suport a wide variety of design methodology...
 
CASE tools
112
most popular method for developing IS, which is a traditional method that still is widely used.
 
Structured Analysis
113
Is a newer approach that many analysts prefer
 
Object oriented analysis
114
phases of  structured analysis for planning analyzing, designing , implementting and supporting...
 
System development life cycle
115
structured analysis is a predictive approach.
 
Predictive Approach
116
focuses on processes that transform data into useful information.
 
PRoces-centered
117
processes that cat on the data.
 
objects
118
characteristics of an object which it inherits from its calss or posses on its own.
 
properties
119
built-in processes that can change an object's properties.
 
methods.
120
requests specific behavior on information from another object.
 
message
121
SDLC is also called_______
 
waterfall method
122
where planning, analysis and design tasks interact conitiniously to produce prototypes that...
 
Interactive model
123
is more flexible than SDLC and constant dialog among users, managers, and system developers.
 
Interactive model
124
typically uses a spiral development model, whic hbuilds on a series of interactions.
 
Adaptive method
125
represents a series of interactions or revisons based on usre feedback.
 
spiral model
126
usually begibs with a formal request to tyhe IT department called a system request.
 
System planning phase.
127
describes probles or desired changes in an information system or business process
 
System request
128
to identify the nature and scope of the business opportunity or problem
 
preliminary investigation
129
a key part of preliminary investigation that reviews anticipated costs and benefits and recomends...
 
Feasibility study
130
this pahse is for building a logical model of the new system.
 
System Analysis phase
131
the purpose of this pahse is to create a blueprint that will satisfy all documented requirements...
 
System design phase.
132
the first step to system analysis phase wher you investigate business processes and document...
 
requirements modelling.
133
the ed product of the systems analysis phase. describes management and useer requirements,...
 
system requirements
134
where the result of tsystem design phase is doucumented.
 
System design specification
135
the result is presented to management and users for review and approval.
 
System design specification
136
Phase when the new system is constructed
 
systems implementation phase
137
an assesssment to determnine whether the system operates properly and if costs and benefits...
 
Systems evaluation
138
phase when the IT staff maintains, enhaces and protects the system
 
Systems operation,support and security phase
139
another adoptive method which focuses on n intensely interactive process between developers...
 
Extreme programming (XP)
140
Use teams composed of users , managers, and IT staff.
 
joint applications development (JAD) and Rapid Application Development (RAD)
141
focuses of team based fact-finding which is only one phase of the developmenty process.
 
Joint applications development (JAD)
142
is more like a compressed version of the Entire process.
 
Rapid Applications development (RAD)
143
Other development methods:
 
> Rational unified Process (RUP)
>Microsoft Solutions Frameworks (MSF)

144
offers a flexible, interactive proces for managing software development projects that can minimize...
 
Rational Unified process (RUP)
145
documents the experiences of its own software development teams.
 
Microsoft solutions frameworks (MSF)
146
is the process of planning, scheduling, monitoring, controlling and reporting upon...
 
Project management
147
System development guidelines
 
1.) Planning
2.) Involve the users throughout the development process3.)Listening...
148
includes 6 main functions: application development, system support and security, user support,...
 
technical support
149
provides vital protection and maintenance service for system hardware and software, including...
 
Systems support and security
150
installs and configures the work stations
 
deployment team
151
provides technical information, training and productivity support. 
also...
 
User support
152
involves db design, management, seucirty, backup and user access.
 
database administrators.
153
includes hardware and software maintenance, support and security.
 
network administrator.
154
is a vital technical support function
 
web support
155
web support sepcialists that support a company's internet and intranet operations.
 
Webmasters
156
team that reviews and tests all applications and systems changes to verify specifications and...
 
Quality Assurance (QA)
157
verifies that an individual demonstrated a certain level of knowledge/skill on a standardized...
 
certification
158
is the set of beliefs, rules, traditions, values and attitudes that define a company and influences...
 
Corporate Culture


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