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2 Chapter 13
Redesigning the Organization
with Information Systems
13.1 ©0008 by Prevece ادنلا"
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سوه
How could building a new system
change the way an organization works?
How can a company make sure that
the new information systems it builds
fit its business plan?
What are the steps required to build a
new information system?
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۳ Ce here een ocr 6
4 9 TO aM aD
eed
4. What alternative methods for
building information systems are
available?
5. Are there any techniques or
system-building approaches to help
us build e-commerce and e-
business applications more rapidly?
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Oe Ola ree
1. Major risks and uncertainties in
systems development
2. Determining when new systems and
business processes can have the
greatest strategic impact
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لك
to the Oistess Phra سور مس ولا
Information Systems Plan
* Road map indicating direction of
systems development: the rationale, the
current situation, the management
strategy, the implementation plan, and
the budget
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لك
صتص ب ين 6 1 1نسينينا
Enterprise Analysis
(Business Systems Planning)
* Analysis of organization-wide
information requirements
* Identifies key entities and attributes
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ل
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صتص ب ين 6 1 1نسينينا
Strategic Analysis or
Critical Success Factors
* Critical Success Factors (CSFs): A small
number of easily identifiable operational
goals shaped by industry, firm, manager,
and broader environment. Used to
determine information requirements of
organization
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ل
ومحاصبرد وعاصصل ها 005035 يبو(
942 سب
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لك
Developwedt wad Orqadtzdiond Okan ری
The Spectrum of Organizational
Change
¢ Automation: Speeding up performance
¢ Rationalization of procedures:
Streamlining of operating procedures
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لك
Developwedt wad Orqadtzdiond Okan ری
The Spectrum of Organizational
Change
¢ Business process reengineering: Radical
design of business processes
* Paradigm shift: Radical reconceptualization
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لك
سور لو او وصتجهت جوكحات لدصلدجادهي 0 1
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00 ee ees
vores Provess Reeaerriny
Workflow Management
۰ The process of streamlining business
procedures so that documents can be
moved easily and efficiently from one
location to another
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Greps ما CP Pevtive سم
° Senior management needs to develop broad
strategic vision
* Management must understand and measure
performance of existing processes as baseline
¢ Information technology should be allowed to
influence process design from start
٠ IT infrastructure should be able to support
business process changes
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00 ee ees
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Process ‘hoprovewed; Cstess Provess Oarnpwrd,
Dord بل Doce (TRO), ocd Gtx Giger
* Business Process Management (BPM):
Enables organizations to manage
incremental process changes required
simultaneously in many areas of business.
Provides a methodology for dealing with
the organization’s need to optimize
numerous internal business processes and
processes shared with other companies
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Process ‘hoprovewed; Cstess Provess Oarnpwrd,
Dord بل Doce (TRO), ocd Gtx Giger
* Total Quality Management (TQM): A
concept that makes quality control a
responsibility to be shared by all people
in an organization
Six Sigma: A specific measure of quality
representing 3.4 defects per million
opportunities
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Process ‘hoprovewed; Cstess Provess Oarnpwrd,
Dord بل Doce (TRO), ocd Gtx Giger
How Information Systems
Contribute
to Total Quality Management
* Simplify product or production process
¢ Enable benchmarking
* Use customer demands as guide to improve
products and services
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Process ‘hoprovewed; Cstess Provess Oarnpwrd,
Dord بل Doce (TRO), ocd Gtx Giger
How Information Systems
Contribute
to Total Quality Management
٠ Reduce cycle time
¢ Improve the quality and precision of the
design
* Increase the precision of production
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يي ل Overview
Overview
* Systems Development: Activities that go
into producing an information system
solution to an organizational problem of
opportunity
* Systems Analysis: Analysis of a problem
that the organization will try to resolve
with an information system
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سورج( وممجاور3) خأن بصو ©
۱۳ oystews tevebpwed proves
Prue 942
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يي ل Overview
له سس
* Feasibility Study: As part of the
systems analysis process, the way
to determine whether the solution
is achievable, given the
organization’s resources and
constraints
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يي ل Overview
له سس
Establishing Information
Requirements
¢ Stating information needs that new
system must satisfy
* Identifying who, when, where, and
how components of information
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سورج( وممجاور3) خأن بصو ©
Gystews Orsiqa
* Systems Design: Details how a system
will meet information requirements as
determined by the systems analysis
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يي ل Overview
و۳7 موه( و۵ | ممطممون
* Programming: Process of translating
system specifications prepared during
the design stage into program code
* Testing: Process that determines
whether the system produces desired
results under known conditions
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سورج( وممجاور3) خأن بصو ©
و۳7 موه( و۵ | ممطممون
* Unit Testing: Process of testing each program
separately
* Systems Testing: Tests functioning of the
information system as a whole
* Acceptance Testing: Provides final certification that
system is ready to be used in production setting
* Test Plan: Prepared by development team. Includes
preparations for the series of tests to be performed
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يي ل Overview
Corwpletay te Gystews Orvelpwed Provess
Conversion
* Conversion: Process of changing from
the old system to the new system
* Parallel Strategy: Conservative
conversion approach where both the old
system and the potential replacement
are run together
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و۳7 موه( و۵ | ممطممون
Conversion
¢ Direct Cutover: Risky conversion approach
whereby the new system replaces the old
system on an appointed day
* Pilot Study: Strategy to introduce the new
system to a limited area of the organization
until it is proven to be fully functional
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Corwpletay te Gystews Orvelpwed Provess
Conversion
* Phased Approach: Introduces new
system replacement in stages
* Documentation: Descriptions of how an
information system works from both a
technical and end-user standpoint
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سورج( وممجاور3) خأن بصو ©
Cowpletay the Gystews Orvelpwed Process
Production and Maintenance
* Production: Stage after new system is installed and
the conversion is complete
* Postimplementation Audit: Formal review process
conducted after a system has been placed in
production
* Maintenance: Changes in hardware, software,
documentation, or procedures of production
system to correct errors
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يي ل Overview
© sacple test plas tp test a واه سس
Procedure ‘Address and Maintenance “Test Series 2
222 est Series
Prepared By: Date: Version:
Test Condition Expected ‘Outpue Next
Ref. Tested Special Requirements Results On Screen
20 Change records
21 Change existing Key field Not allowed
record
22 Change nonexistent Other felds “invalid key”
record message
23° Change deleted «Deleted record must “Deleted”
record be avaiable message
24 Make second ‘Change 2.1 above Ok ifvalid —Transaetion كديا
record fle
25 Insert record OK ifvalid Transaction 45
file
26 Abort during ‘Abort 25 No change Transaction VAS
change file
Prue 198-0
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۳ ۱ Creo
7 9 مت ات مه دای اف سب هت بو بت مات ات
eke eee Nes caer
جاصسوح "ارا جمحاور©) Trexticad
Systems Lifecycle
۰ Traditional methodology for
developing information system
that partitions the systems
development process into formal
stages that must be completed
sequentially
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اه مط eke
سس
* Prototyping: Process of building
experimental system quickly and
inexpensively for demonstration and
evaluation so that users can better
determine information requirements
¢ Prototype: Preliminary working
version of information system for
demonstration and evaluation purposes
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مرس
* Iterative: A process of repeating over
and over again the steps to build system
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سس
Steps in Prototyping
1. Identify the user’s basic requirements
2. Develop initial prototype
3. Use the prototype
4. Revising and enhancing the prototype
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۳۳
Seep
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ما۳ ۴و عم نمی امه منم
Advantage
* Useful in designing information system’s
end-user interface
Disadvantage
٠ Rapid prototyping can gloss over essential
steps in systems development
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ما۳ م۵۳ مشطامر6
¢ Application software packages: Set
of prewritten, precoded application
software programs commercially
available for sale or lease
* Customization: Modification of
software package to meet
organization’s unique requirements
without destroying the software’s
integrity
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اه مط eke
ما۳ م۵۳ مشطامر6
Request for Proposal (RFP):
Detailed list of questions submitted to
vendors of software or other services
to determine how well vendor’s
product can meet organization’s
specific requirements
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۲۶ اوح ةناح oP nstowiaieg امه دام من انوم هناهد و po
3
Total
0 2 3 4 5%
Extent of customization (% of total lines of code changed)
rue 8-0
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Gud Over Devebpwrt
٠ Development of information systems
by end users with little or no formal
assistance from technical specialists
٠ Allows users to specify their own
business needs
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اه مط eke
Gud Over Devebpwrt
Managing End-User Development
٠ Information Center: A special facility
within an organization that provides
training and support for end-user
computing
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ا انك
ud wer verse systews Peo devebpordt
‘Traditional Systems (Lifecycle) Development
Mile or
management
tics Delage Wt Propane by aes Main © 1952 Real by periion st
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اه مط eke
اوح
Practice of contracting computer
center operations, telecommunications
networks, or applications development
to external vendors
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اه مط eke
او( مه سطل0
Outsourcing Moves into High Gear
٠ What are the management benefits of
outsourcing?
٠ What management, organization, and
technology issues must be addressed
when deciding whether to outsource
systems development?
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Oe tes ره
Obert Ortected Oevebpwrdt ond Orwprart-Bwed Oevebpwedt
Object-Oriented Development:
Approach to systems development that
uses the object as the basic unit of
systems analysis and design.
Component-Based Development:
Building large software systems by
combining pre-existing software
components
©0008 by Preece ادنلا"
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ae ekOe cad 0ك
Implementation
System Design
System architecture
Subsystems
= programming
“database access
= Data structure
Algorithms
= Controls
Object Design
09-00 سب
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ae ekOe cad 0ك
Ruptd Opphoatca Devebbpwodt (ROO)
* Process for developing systems in a
short time period
٠ Uses prototyping, fourth-generation
tools, and close teamwork among
users and systems specialists
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Oe tes ره
Alotat ®ppicuios Desks (IPO)
Process to accelerate the generation
of information requirements by having
end users and information systems
specialists work together in intensive
design sessions
©0006 by Prevace “I
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ae ekOe cad 0ك
Orb Gervices urd مش 0) لوح و8
Software components deliverable over
Internet
Enable one application to
communicate with another with no
translation required
Standards and protocols: XML, SOAP,
WSDL, UDDI
©0006 by Prevace “I
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ae ekOe cad 0ك
‘Low Ovkr Rea ® Ow wes Orb services
‘ells Rent A Car
اس
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و ۱
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ae ekOe cad 0ك
Ondow va Teck
Web Services at Work
What are the benefits of using Web
services technology?
How can it provide value to firms?
What management, organization, and
technology issues must be addressed
when implementing Web services?
©0006 by Prevace “I
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eee meee
ون Reverie لانن a Dew Brterprise Gystew
Analyze Celanese using the
competitive forces and value chain
models.
How important is Celanese’s
centralized enterprise system to its
business strategy? Why? What is its
business value to the company?
©0006 by Prevace “I
ds
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eee meee
Orknese Revedirdizes wis Dew Citerpree Gystew
What management, organization, and
technology challenges did Celanese
face as it tried to implement OneSAP?
Which were the most difficult? Why?
How successful was Celanese in
meeting these challenges? What
problems did it solve? How? Which
problems remained unsolved?
©0006 by Prevace “I
2.
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