11. introduction to software engineering (2015!04!27) - student

7/25/2019 11. Introduction to Software Engineering (2015!04!27) - Student

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INTRODUCTION TOSOFTWARE

ENGINEERING

INTRODUCTION TOSOFTWARE

ENGINEERINGMarvin V. Lee, (MCSE, MCSD, MCSA, MS, MCPS)

B.S. CoE

Marvin V. Lee, (MCSE, MCSD, MCSA, MS, MCPS)

B.S. CoE


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TOPICSTOPICS

Idea and Status of Software

Software Failures

Software Engineering Overview

Software Engineering Code of Ethics

Principles of Software Engineering

Software Stakeholders

Software Engineering Related Disciplines


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IDEA AND STATUS OFSOFTWARE

IDEA AND STATUS OFSOFTWARE

Idea and Status of Software Software Failures







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IDEA AND STATUS OF SOFTWAREIDEA AND STATUS OF SOFTWARE

Idea of a Software

So!"are #eve$o%&en! i' no! an ar! or a a o!ri*+'.

I! i' no! !e 'a&e a' %rora&&in, -!%rora&&in i' an i&%or!an! inre#ien! in

'o!"are enineerin. B-i$#in 'o!"are i' $i+e -i$#in ri#e'.

Status of Software

A $o! a' een a*ieve#.

Severa$ 'o!"are '!i$$ *o$$a%'e# $i+e 'o&eri#e'.

So!"are ai$-re' a%%en a$$ !e !i&e.


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SOFTWARE FAILURESSOFTWARE FAILURES








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*


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Capers JonesDistriutionof SoftwareProduct

Errors !Di"erentOrigins

Capers Jones

A&eri*an '%e*ia$i'!' in 'o!"areenineerin &e!o#o$oie'.

e an# i' *o$$ea-e' *o$$e*!e# i'!ori*a$#a!a ro& !o-'an#' o 'o!"are %ro/e*!',-n#re#' o *or%ora!ion', an# &ore !an 01overn&en! orani2a!ion'.

3

Distriution of Software Errors !Di"erent Origins

3


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Capers JonesDistriutionof SoftwareProduct

Errors !Di"erentOrigins

#verage Percentage of $ugs ! Di"erentOrigins%

405

675

085

405

465

$ugs ! Di"erent Origins *

Re9-ire&en!' Error (46.:15) De'in Error' (67.4;5)

Co#e Error' (08.005) Do*-&en!a!ion Error' (40.005)

Ba# Error' (44.?;5)


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&ist of So'eFa'ousSoftwareFailures

(#S# )ariner + ,enus proe -./01

One o !e or&-$a' or NASA@' Mariner 4,"ri!!en on %a%er "a' no! *orre*!$!ran'erre# !o !e *o&%-!er *o#e.

A -$$ '!o% a# een -'e# in'!ea# o a*o&&a a 'i&%$e ra&&a!i*a$ error, -!$e!a$ in a *o&%-!er $an-ae.

Te i! 'o!"are &i'*a$*-$a!e# !ero*+e!@' !ra/e*!or an# 'o *a-'e# !e ro*+e!!o $o'e *on!ro$.

Te ro*+e! a# !o e 'e$ #e'!r-*!e# over!e A!$an!i* O*ean.


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#RI#(E 2 E3plosion -../1

I! i' a ro*+e! o E-ro%ean S%a*e Aen* !a!$a-n*e# or i!' =r'! !e'! i!.

Inve'!ia!or' o-n# o-! !a! !e *a-'e oe>%$o'ion #-e !o irre$evan! - an# a %ie*eo 'o!"are on oar# !e ro*+e! "i* "a'no! even nee#e# a# re%or!e# an error an#'!ar!e# a 'e$


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)ars Cli'ate Oriter -...1

Prora&&er' "or+ in !ea&' !o -i$#'o!"are -! one !ea& -'e' I&%eria$ "ei!&ea'-re' (%o-n#') "i$e !e o!er -'e'&e!ri* (+i$ora&').

Wen !e !"o %rora&' *o&&-ni*a!e !oea* o!er, !e a%%$i*a!ion o! *on-'e#an# *a-'e# !e '%a*e*ra! !o e*o&e $o'! in'%a*e.

Ca-'e' aro-n# 46:,111,111.11.


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#454 Crash -..61

ATT enineer' -%ra#e# !e 'o!"are o!eir 447 US '"i!*in *en!er'.

Ea* *o&%-!er "a' #-%$i*a!e# 'o i one"en! "ron !e o!er "o-$# !a+e over.

On an-ar 4:! 41, !e '!o%%e#"or+in ;1 &i$$ion *a$$' ai$e#.

Te %ro$e& "a' in a 'in$e $ine o *o#e o-!o &i$$ion'...an# i! "a' in o! *o&%-!er'@*o%ie'.

Te *o&%an $o'! aro-n#4,111,111,111.11 a' *-'!o&er' e# !o*o&%anH' *o&%e!i!or'.


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4he Pentiu' Chip Error -..71

A $oo+


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8SS 9orktown Stops -..:1

A *re"&e&er o !e *o&%-!er *on!ro$$e#-i#e#


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4he )issing #'erican Patriot )issile-..1

An A&eri*an Pa!rio! Mi''i$e a!!er inDaran, Sa-#i Araia, ai$e# !o 'oo! #o"nan in*o&in Ira9i S*-# &i''i$e.

In or#er or !e Pa!rio! &i''i$e !o "or+, i!nee#e# !o a**-ra!e$ +no" !e !i&e.

Te %rora& "en *onver!in !e in!erna$*$o*+ !i&e in!o !e !i&e -'e# !e-i#an*e ''!e& in!ro#-*e# a !in &i'!a+e,

i! ro-n#e# !e n-&er #o"n '$i!$. Wi! ea* %a''in 'e*on# !e error e*a&e

$arer -n!i$ !e &i''i$e =na$$ &i'' !e!are!.


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$ritish Password Chaos S!ste' -...1

Te U.J. Pa''%or! Aen* i&%$e&en!e# ane" Sie&en' *o&%-!er ''!e&, "i*ai$e# !o i''-e %a''%or!' on !i&e or a a$&i$$ion Bri!i' *i!i2en'.

Te Aen* a# !o %a &i$$ion' in*o&%en'a!ion, '!aK over!i&e an# -&re$$a'or %eo%$e 9-e-in in !e rain or %a''%or!'.

Te Pa''%or! Aen* ro$$e# o-! i!' ne"*o&%-!er ''!e& "i!o-! a#e9-a!e$

!e'!in i! or !rainin i!' '!aK a ne" $a"re9-ire# a$$ *i$#ren -n#er 4? !rave$inaroa# !o o!ain a %a''%or!, re'-$!in in a-e '%i+e in %a''%or! #e&an# !a!over"e$&e# !e - ne" *o&%-!er''!e&.


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Fault! Soviet Earl! ;arning S!ste'-.:

a$$ %eo%$e an# *a-'e' "or$# "ar III.


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90= $ug -...1

B-'ine''e' '%en! i$$ion' on %rora&&er'!o => a $i!* in $ea* 'o!"are.

Wi$e no 'ini=*an! *o&%-!er ai$-re'o**-rre#, %re%ara!ion or !e 6J - a# a'ini=*an! *o'! an# !i&e i&%a*! on a$$in#-'!rie' !a! -'e *o&%-!er !e*no$o.

To 'ave *o&%-!er '!orae '%a*e, $ea*'o!"are o!en '!ore# !e ear or #a!e' a'!"o #ii! n-&er', '-* a' or 4.

Te 'o!"are a$'o in!er%re!e# 11 !o &ean411 ra!er !an 6111, 'o "en !e ear6111 *a&e a$on, -' "o-$# re'-$!.

Te *o'! o - "a' a$&o'! :11 i$$ion.


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SOFTWAREENGINEERINGOVERVIEW

SOFTWAREENGINEERINGOVERVIEW








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SOFTWARE ENGINEERING OVERVIEWSOFTWARE ENGINEERING OVERVIEW

(orth #tlantic 4reat! Organi>ation -(#4O1./:+ ?er'an!

Te !er& 'o!"are enineerin "a' in!ro#-*e#.

3

Te a!!en#ee' #e=ne 'o!"are enineerin a'

I! i' !e e'!a$i'&en! an# -'e o 'o-n#enineerin %rin*i%$e' in or#er !o o!aine*ono&i*a$$ 'o!"are !a! i' re$ia$e an# "or+'e*ien!$ on rea$ &a*ine'.


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SOFTWARE ENGINEERING OVERVIEWSOFTWARE ENGINEERING OVERVIEW

IEEE Standard ?lossar! of SoftwareEngineering 4er'inolog! ..6

S!an#ar# #e=ni!ion o 'o!"are enineerin a'een e'!a$i'e#.

De=ni!ion e*o&e' I! i' !e a%%$i*a!ion o a

''!e&a!i*, #i'*i%$ine#, 9-an!i=a$e a%%roa*!o !e #eve$o%&en!, o%era!ion, an#&ain!enan*e o 'o!"are !a! i', !ea%%$i*a!ion o enineerin !o 'o!"are.


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SOFTWARE ENGINEERINGOVERVIEW


SoftwareEngineeringRelated4er's

4he ter' Software Engineering co'es inwhen%

Con*ern' in !e #eve$o%&en! o $are%rora&'.

Tere are i''-e' ao-! *o&%$e>i!.

So!"are evo$ve'.

E*ien* in 'o!"are #eve$o%&en!.

Peo%$e *oo%era!ion.

Te 'o!"are a' !o '-%%or! i!' -'er'eKe*!ive$.

Invo$ve' #iKeren! #i'*i%$ine'.

Ba$an*in a*!.


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Software

;hat is a Software@

Te'e are *o&%-!er in'!r-*!ion' or #a!a.

An!in !a! *an e '!ore# e$e*!roni*a$$ i''o!"are, in *on!ra'! !o '!orae #evi*e' an##i'%$a #evi*e' "i* are *a$$e# hardware.


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SoftwareCategories

Software can e categori>e into two -01na'el! s!ste' and application softwareA

S!ste' Software

Dea$' "i! in!era*in "i! ar#"are an#%rovi#e' 'ervi*e' !o a%%$i*a!ion' 'o!"are.

T%e' o S'!e& So!"are

O%era!in S'!e&.

Lan-ae Co&%i$er'.

A''e&$er'.

Devi*e Driver'.

De-er'.

Ne!"or+in !oo$'.


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SoftwareCategories

#pplication Software

Reerre# !o a' en# -'er 'o!"are an# a$$o"'!e -'er' !o %eror& '%e*i=* !a'+'.

T%e' o A%%$i*a!ion So!"are

Ga&e' an# En!er!ain&en!

In!e$$ien!

Mo#e$$in an# Si&-$a!ion

Rea$


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SOFTWAREENGINEERING CODEOF ETICS

SOFTWAREENGINEERING CODEOF ETICS








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SOFTWARE ENGINEERING CODE OFETICS


;hat is Ethics@

Te =e$# o e!i*' (or &ora$ %i$o'o%)invo$ve' ''!e&a!i2in, #een#in, an#re*o&&en#in *on*e%!' o ri! an# "roneavior.

;hat is Software Engineering Code of Ethics@

It is an international standard for professional software

development and ethical responsibility.

3


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Principles forEthics andProfessionalPractices in

SoftwareEngineering

Eight Principles for Ethics andProfessional Practices in SoftwareEngineering *


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Principles forEthics andProfessionalPractices in

SoftwareEngineering

Eight Principles for Ethics andProfessional Practices in SoftwareEngineering *


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So'e#pplicationsof Code ofEthics

Code of Ethics are Bust si'ple guidelinesut these state'ents provide a asis fora road scope of the actions andBudg'ents for professionals in softwareengineeringA

So'e applications of Code of Ethics *


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PRINCIPLES OFSOFTWAREENGINEERING

PRINCIPLES OFSOFTWAREENGINEERING


Software Failures







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PRINCIPLES OF SOFTWAREENGINEERING


;hat are Principles of Software Engineering@*


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Davids Earl!Principles ofSoftwareEngineering

#lan Davis *


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2 )ost I'portant Davids Principles ofSoftware Engineering *


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Ro!ces )ore)odernPrinciples

;alker Ro!ce *

4op 6 Ro!ces Principles for )odernSoftware )anage'ent *


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;asser'ansFunda'entalSoftwareEngineering

Concepts

#nthon! ;asser'an *

Software Engineering Discipline asedfro' ;asser'ans Concepts *


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SOFTWARESTAJEOLDERS

SOFTWARESTAJEOLDERS


Software Failures







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SOFTWARE STAJEOLDERSSOFTWARE STAJEOLDERS

;hat is a Stakeholder@

Te *o-$# *on'i#er a' in#ivi#-a$', !ea&,orani2a!ion, or *$a''e' !ereo, avin anin!ere'! in !e rea$i2a!ion o !e ''!e&.

;ho are the Software Stakeholders

These are groups or individuals affected by a software

system. Each of these has its own requirements,

interests, and needs to be met by the software system.


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SoftwareStakeholderCategori>ation

Software Stakeholder Categori>ation

Acquirers

Over'ee !e %ro*-re&en! o !e ''!e&or %ro#-*!.

Assessors

Over'ee !e ''!e&H' *onor&an*e !o'!an#ar#' an# $ea$ re-$a!ion.

CommunicatorsE>%$ain !e ''!e& !o o!er

'!a+eo$#er' via i!' #o*-&en!a!ion an#!rainin &a!eria$'.


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Developers

Con'!r-*! an# #e%$o !e ''!e& ro&'%e*i=*a!ion'.

Maintainers

Manae !e evo$-!ion o !e ''!e&on*e i! i' o%era!iona$.

Production EngineersDe'in, #e%$o, an# &anae !e

ar#"are an# 'o!"are environ&en!' in"i* !e ''!e& "i$$ e -i$!, !e'!e#,an# r-n.


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Suppliers

B-i$# an#Qor '-%%$ !e ar#"are,'o!"are, or inra'!r-*!-re on "i* !e''!e& "i$$ r-n.

Support Staf

Provi#e '-%%or! !o -'er' or !e %ro#-*!or ''!e& "en i! i' r-nnin.

System Administrators

R-n !e ''!e& on*e i! a' een#e%$oe#.


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Testers

Test the system to ensure that it is suitable for

use.

Users

Define the systems functionality and

ultimately mae use of it.


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SOFTWAREENGINEERINGRELATED DISCIPLINES

SOFTWAREENGINEERINGRELATED DISCIPLINES








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SOFTWARE ENGINEERING RELATEDDISCIPLINES


;hat are Software Engineering RelatedDisciplines@

I#en!i=e' !e #i'*i%$ine' "i! "i* 'o!"areenineerin 'are' a *o&&on o-n#ar.

Sare *o&&on o-n#arie' e!"een 'o!"are

enineerin an# re$a!e# #i'*i%$ine.


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&ist of Software Engineering RelatedDisciplines and =nowledge #reas

Co&%-!er Enineerin

Co&%-!er S*ien*e

Manae&en!

Ma!e&a!i*' Pro/e*! Manae&en!

-a$i! Manae&en!

So!"are Erono&i*' (-&an Fa*!or')

S'!e&' Enineerin (De=nin C-'!o&er

Nee#')


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REFERENCESREFERENCES


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4e3tookReferences

Essentials of Software Engineering+


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Power PointReferences

SE+ Introduction ,an ,liet+ ans 066:A


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;esite andRelated&inksReferences

Collection of Software $ugs

!!%QQ""":.in.!-&.#eQ-*+$eQ-'e.!&$

Data ! Capers Jones

!!%QQna&*oo+ana$!i*'.*o&Qao-!Q

Ethics

!!%QQ""".ie%.-!&.e#-Qe!i*'Q

Related Disciplines of SoftwareEngineering

!!%QQ""".*o&%-!er.orQ%or!a$Q"eQ'"eo+Q!&$Q*46INTRODUCTION


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Software

!!%QQ"""."eo%e#ia.*o&QTERMQSQ'o!"are.!&$

Software Engineering !!%QQ""".*o'*.*an!er-r.a*.n2Q*'=e$#-i#eQ'!-#en!QSo!"are561enineerin.!&$QQ"""."eo%e#ia.*o&QTERMQSQ'o!"are.!&$

Software Engineering% $ack to theDrawing $oard

http!""www.cs#fn.org"softwareengineering"bactodr

awingboard.php


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Software Engineering Code of Ethics andProfessional Practice

!!%QQ""".a*&.orQao-!Q'e

11. introduction to software engineering (2015!04!27) - student

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