SIA 03 - SDLC
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System Development >>>
S D L C
System Development Life Cycle
Main topic:
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Dilakukan karena
Latar Belakang Pengembangan Sistem
S D L C
Kebutuhan bisnis Perkembangan teknologi Perkembangan bisnis
prosesMengefisienkan biayaMeningkatkan
produktivitas Delegasi pengembilan
keputusan
Mengintegrasikan sistemMenggantikan sistem
lama yang tidak stabil
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SikLus Hidup Pengembangan Sistem
>> System Development Life Cycle (SDLC)
Tahapan dari SDLC:
Analisis Sistem
Conceptual Design
Physical Design
mplementasi !"onversi
#perations !$aintenance
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Manajemen Akuntan IS steering committee
Project development team Analis Sistem Programmer Pihak Eksterna
PiC Pengembangan Sistem
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Perencanaan Pengembangan Sistem
Perlu memperhatikan: Consistency
Sesuai dengan renstra perusahaan
Efficiency yang didapatkan melalui pengembangan sistem
Cutting edgetechnology and techni!ues" Lower costs
mengurangi duplikasi# $aktu# dan biaya
Adaptaility untuk pengembangan sistem di masa depan
!ools monitoring Perencanaan Sistem: PE"! #Program E$aluation and "e$iew !echni%ue& 'A(!! Chart
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Design
%irdhouse
&'(
&%ill(
%uy )ood
* +ails
&,(
&%ill(
%uy
Paint
&,(
&Sara(
%uild
%ase
&'(
&%ill(
%uild
-oof
&,(
&%ill(
+ail
.ogether
&'(
&%ill(
Paint *
Decorate
&/(
&Sara(
Sell
&'(
&Sara(
SAMPE PE-. 01A-. 2or building and selling a birdhouse" Each block contains a task and a time estimate &may
include best time# $orst time# and average time(" May indicate $ho $ill be responsible for the task"
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SAMPLE 'A(!! C)A"!
0omplete
.esting
In Development
Milestone
, ' / 3 4 5 6 7 8 ,9
Design birdhouse
%uy $ood * nails
%uy paint
%uild roof%uild base
+ail together
Paint * decorate
Sell
Period
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AnaLisis Sistem
Su topic:
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Langkah%Langkah AnaLisis Sistem
Mengapa sistem dikembangkan# masalah sistem sekarang#cost and benefit ne$ system# harapan dan tujuan
nvestigasi A&aL
Identifikasi kelebihan dan kekurangan sistem
Survey sistem
Kelayakan dari rencana pengembangan sistem
'easibility Study (Studi"elayakan)
Informasi apa saja yang diharapkan dari sistem:
De*nisikan "ebutuhannformasi
Sistem seperti apa yang diperlukan:
De*nisikan "ebutuhanSistem
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Survey
Metode Pengumpuan Data
Intervie$s
;uestionnaires
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'easibiLity Study + Studi "eLayakan
Manajemen# Akuntan# auditor internal# pengelola sistem#user
Dilakukan #leh,
!echnical *easiility +perational *easiility Legal *easiility Scheduling *easiility Economic *easiility
$eliputi
0ost vs %enefit Menggunakan metode +P=# Payback Period# I--
-C#.#$C '-ASBL/0
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De*nisikan "ebutuhan nformasi ! Sistem
,eutuhan -nformasi. meliputi:
> Processes
> Data elements
> Data structure
> Inputs
> Documentation constraints
> 0ontrols> -eorgani?ations
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De*nisikan "ebutuhan nformasi ! Sistem
Kebutuhan sistem# meliputi@> sefulness
> Economy
> -eliability> Availability
> .imeliness
> 0ustomer service
> 0apacity
> Ease of use
> 2leBibility
> .ractability> Auditability
> Security
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Add on >>> Communication 1AP
,9 C ,3
Communication 'ap Prolem
Systems Analyst
Management
"esistanceto change
/osecurity
0ncertainty
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Add on >> Communication GAP
Dalam pelaksanaan sur$ey sistem er1alan. ditekankan adanya
pertimangan perilaku untuk mengatasai1urang komunikasi
Pendekatan untuk mengatasi jurang komunikasi@
Ketahui sebanyak mungkin orang yang terlibat dalam sistem Komunikasikan manfaat sistem yang diusulkan
%erikan jaminan &terkait kerja dan tanggung ja$ab(
%erikan jaminan sistem akan memudahkan kerja
Manajemen support
1umani?e System
Kendalikan Ekspektasi ser
1indari Emosi
KEEP the System SImpe
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ConceptuaL Design
Su topic:
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Tahap-Tahap ConceptuaL Desin
Prepare
DesignSpecifications
Prepare
0onceptual SystemsDesign -eport
Evaluate
DesignAlternatives
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!"aluasi Alternati# Desain $istem
Apakah akan menggunakan 1asa perusahaan
sendiri atau $endor222 Packaged soft$are
In>house development End>user development
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Prepare Desin $peci%cation
Prepare design specificationsMeliputi@
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PhysicaL Design
Su topic:
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Systems
Analysis
0onceptual
Systems
Design
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memperhatikanKegunaan output
Media output
2ormat printed
ocation
AccessDetail
.imeliness
Desain &utput
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'ile and Data(ase Desin
*ile and dataase design =arious company segments need to store data in
compatible formats so that data can be shared across
units"
Important file and database design considerations
include@ Storage medium
Processing mode
Maintenance
Si?e
Activity level
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Desain )nput
Pertimangannya: Input medium
Input source
Input format Input type
=olume
Personnel
2re!uency 0ost
Error detection and correction
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Proram Desin
3ang dierikan kepada programmer: Laporan Desain ,onsep
Pertimangan input.
Pertimangan output.
Pertimangan file.
Pertimangan dataase design
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Desain Prosedur
Dapat disampaikan melalui@System manuals
ser instruction classes.raining materials
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Desain *ontroL
Meliputi: =alidityAuthori?ationAccuracy Security +umerical controlAvailability Maintainability IntegrityAudit trail
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mpLementasiSistem ! "onversi
Su topic:
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Systems
Analysis
0onceptualSystems
Design
Physical
Systems
Design
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Di antaranya (ew electrical outlets
Data communications facilities
"aised floors
)umidity controls
Special lighting
Air4conditioning
Security measures. such as:
*ire protection
Emergency power supply Space for e%uipment. storage. and offices
Pen+iapan $istem
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!est the system Dilakukukan !rial "0(:
Documents and reports ser input
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etode Penu,ian
Pendekatan yang digunakan@)alk>throughs
Processing test transactions
Acceptance tests
!ermasuk 1uga software dari $endor
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*on"ersi Cuto"er/
Cuto$erergantinya sistem lama men1adi sistem aru
.ipe>tipe cutover@
Percontohan (pilot)
Sistem diujicoba pada satu subset keseluruhan operasi
Serentak &directimmediate)
Sistem lama langsung diganti sistem baru
%ertahap (phase in)
Sistem baru digunakan bertahap per bagian
Paralel
Sistem baru dan sistem lama dijalankan bersamaan
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#peration !$aintenance
Su topic:
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Post mpLementation 2evie&
3ang Dire$iew:'oals and +1ecti$esSatisfactionCost and BenefitReliability
AcccuracyTimeliness
Compatiility Controls and security Errors !raining Communications
+rgani5ation changes Documentation
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Terima Kasih
Jakarta, 11 Oktober 2011