SOFTWARE ENGINEERING ASSIGNMNT 4.pptx

8/18/2019 SOFTWARE ENGINEERING ASSIGNMNT 4.pptx

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ROLL NO. 1319274 CSE 6TH

SSUBMITTED BY:AN ALI

SOFTWAREENGINEERING


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Software Quality

In the context of software engineering soft!"# $%!&'t( two relate! "ut !istinct notions that exist where#er $ualityin a "usiness context&

Software functional $uality re'ects how well it co()lies wiconfor(s to a gi#en !esign "ase! on functional re$uire(es)eci%cations* That attri"ute can also "e !escri"e! as the

)ur)ose of a )iece of software or how it co()ares to co()the (ar+et)lace as a worthwhile )ro!uct*

Software structural $uality refers to how it (eets non,funcre$uire(ents that su))ort the !eli#ery of the functionalre$uire(ents such as ro"ustness or (aintaina"ility the !which the software was )ro!uce! correctly*


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Quality factors&

-orta"ility

.sa"ility

Reusa"ility

/aintaina"ility

0orrectness


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Software Quality Stan!ar!s

ISOCM

M

IEEESI)

SI*MA

+

T,M


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12 ISO 3international stan!ar!organi4ation2

ISO International Stan!ar!s ensure that )ro!ucts an! sesafe relia"le an! of goo! $uality* For "usiness they aretools that re!uce costs "y (ini(i4ing waste an! erincreasing )ro!ucti#ity* They hel) co()anies to acc(ar+ets le#el the )laying %el! for !e#elo)ing counfacilitate free an! fair glo"al tra!e* There are !i5erent IS

an! ha#e !i5erent )olicies rules an! regulation for !i5ere


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ISO 6771

ISO 6771&8719 sets out the criteria for a $uality (ansyste( an! is the only stan!ar! in the fa(ily that can "eto 3although this is not a re$uire(ent2* It can "e useorgani4ation large or s(all regar!less of its %el! of afact there are o#er one (illion co()anies an! organi4o#er 1:7 countries certi%e! to ISO 6771*


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ISO 6778

ISO 6778 a))lies to those organi4ations which !o n)ro!ucts "ut are only in#ol#e! in )ro!uction* Exa()lescategory in!ustries inclu!e steel an! car (anufacturing that "uy the )ro!uct an! )lant !esigns fro( external soare in#ol#e! in only (anufacturing those )ro!ucts* Ther6778 is not a))lica"le to software !e#elo)(ent organi4at


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ISO 677;

ISO 677; a))lies to organi4ations that are in#ol#e!installation an! testing of the )ro!ucts*

ISO 677; is an u("rella ter( that refers to a !e#elo)e! an! )u"lishe! "y the International Organi4Stan!ar!i4ation*

The latest #ersion of this stan!ar! is ISO 677;an!


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Shortco(ings of ISO 6777

So(e of these shortco(ings of the ISO 6777 ce)rocess are the following&

ISO 6777 re$uires a software )ro!uction )rocess to "eto "ut !oes not guarantee the )rocess to "e of high also !oes not gi#e any gui!eline for !e%ning an a))rocess*

ISO 6777 certi%cation )rocess is not fool,)roofinternational accre!itation agency exists* Therefore ithat #ariations in the nor(s of awar!ing certi%catesa(ong the !i5erent accre!itation agencies an! also aregistrars*


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82 0// 3ca)acity (aturity (o!

SEI 0// can "e use! two ways& ca)a"ility e#aluation an)rocess assess(ent*

0a)a"ility e#aluation an! software )rocess assess(en(oti#ation o"=ecti#e an! the %nal use of the result* e#aluation )ro#i!es a way to assess the software )rocessof an organi4ation*

The results of ca)a"ility e#aluation in!icates the li+ely )erfor(ance if the contractor is awar!e! a wor+* Therresults of software )rocess ca)a"ility assess(ent can "select a contractor*


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L#-#&s of CMM

A software !e#elo)(ent organi4ation at this le#el is cha"y a! hoc acti#ities* >ery few or no )rocesses are !efollowe!*

Since software )ro!uction )rocesses are not !e%ne!engineers follow their own )rocess an! as a result !e#e5orts "eco(e chaotic*

Therefore it is also calle! chaotic le#el* The success o!e)en!s on in!i#i!ual e5orts an! heroics*

LEEL 1: INITIAL


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?E>E? 8& RE-EATA@?E

At this le#el the "asic )ro=ect (anage(ent )racticetrac+ing cost an! sche!ule are esta"lishe!* si4e esti(ation techni$ues li+e function )oint analysis 0O0are use!*

The necessary )rocess !isci)line is in )lace to re)esuccess on )ro=ects with si(ilar a))lications*

-lease re(e("er hat o))ortunity to re)eat a )roconly when a co()any )ro!uces a fa(ily of )ro!ucts*


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?E>E? ;& EFINE

At this le#el the )rocesses for "oth (anage(ent an! !eacti#ities are !e%ne! an! !ocu(ente!*

There is co((on organi4ation,wi!e un!erstan!ing ofroles an! res)onsi"ilities*

The )rocesses though !e%ne! the )rocess an! )ro!uct $not (easure!* ISO 6777 ai(s at achie#ing this le#el*


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?E>E? B& /ANAGE

At this le#el the focus is on software (etrics* Two (etrics are collecte!*

-ro!uct (etrics (easure he characteristics of the )ro!!e#elo)e! such as its si4e relia"ility ti(e coun!erstan!a"ility etc*


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?E>E? 9& O-TI/ICING

At this stage )rocess an! )ro!uct (etrics are collecte!* -)ro!uct (easure(ent !ata are analy4e! for continuoi()ro#e(ent*

For exa()le if fro( an analysis of the )rocess (eresults it was foun! that the co!e re#iews ere not #ery e5a large nu("er of errors were !etecte! only !uring the u

then the )rocess (ay "e %ne tune! to (a+e the ree5ecti#e*

Also he lessons learne! fro( s)eci%c )ro=ects are incor)the )rocess*


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;2 IEEE 3:;7,871B2

Software )ro!uct (easure(ents accurately re)resen)ro!uct $uality* Software )ro!uct (easure(ents are s)ro=ect sta+ehol!ers*

Software )ro!uct (easure(ents are )erfor(e! on)ro!ucts !e#elo)e! "y the su))lier as well as all of thesu"contractors*

Software )ro!uct (easure(ents are )resente! to (afor re#iew an! )otential correcti#e an! )re#enti#e actio


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B2 -S- 3-ersonal software )roce

-ersonal Software -rocess 3-S-2 is a scale! !own #ersin!ustrial software )rocess* -S- is suita"le for in!i#i!uai()ortant to note that SEI 0// !oes not tell software !how to analy4e !esign co!e test or !ocu(ent software"ut assu(es that engineers use e5ecti#e )ersonal )racti

-S- recogni4es that the )rocess for in!i#i!ual use is !i5e

that necessary for a tea(* The $uality an! )ro!ucti#engineer is to a great extent !e)en!ent on his )rocessfra(ewor+ that hel)s engineers o (easure an! i()ro#they wor+*


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-S- -lanning

esign

0o!e

0o()ile

Test

-ost(orte(

-lanning

?OGS-rosu

Fig. Schematic representation of PSP


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92 SI SEG/A

The )ur)ose of Six Sig(a is to i()ro#e )rocesses to "etter faster an! at lower cost* It can "e use! to i()rofacet of "usiness fro( )ro!uction to hu(an resourcesentry to technical su))ort* Six Sig(a can "e use!acti#ity that is 0oncerne! with cost ti(eliness an! $results*

Therefore it is a))lica"le to #irtually e#ery in!ustry* Six(any organi4ations si()ly (eans stri#ing for near )Six Sig(a is a !isci)line! !ata,!ri#en a))roach to !efects in any )rocess


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Six sig(aDs su" (etho!ology&

The Six Sig(a /AI0 )rocess 3!e%ne (easure i()ro#e control2 is an i()ro#e(ent syste( for)rocesses ailing "elow s)eci%cation an! loo+ing for inci()ro#e(ent*

The Six Sig(a /A> )rocess 3!e%ne (easure !esign >erify2 is an i()ro#e(ent syste( use! to !e#

)rocesses or )ro!ucts at Six Sig(a $uality le#els*


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2 TQ/ 3total $uality (anage(

TQ/ can "e !e%ne! as a (anage(ent techni$ue for)rocesses )ro!ucts ser#ices an! the other aassociate! with the )ro!uct*

It focusses on the entire "usiness an! NOT =ust on a)ro=ect or )rocess*

e#elo) a )rocess that is #isi"le re)eata"le an! (eas

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SOFTWARE ENGINEERING ASSIGNMNT 4.pptx