Systems Analysis and Design Feasibility Study PDF

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s t emsAnal y s i sandDes i gnFeas i bi l i t ySt udy

2I nt r oduct i onTheFeas i bi l i t ySt udyi st hepr el i mi nar ys t udyt hatdet er mi neswhet herapr opos ed s y s t emspr oj ecti st echni c al l y ,financi al l y ,andoper at i onal l ypr ac t i c al .TheAl t er nat i v esAnal y s i s , us ual l yi nc l udedaspar toft heFeas i bi l i t ySt udy ,i dent i fi esvi abl eal t er nat i v esf ort hes y s t em des i gn anddev el opment .Bet weent hem,t hedoc ument spr ovi de:–Ananal y s i soft hes y s t em obj ec t i v es , f unc t i onalr equi r ement s ,ands y s t em des i gnconcept s ;–Adet er mi nat i onoft hef eas i bi l i t yofappl y i ng aut omat eds y s t emst oeffec t i v el y ,effic i ent l y ,andec onomi c al l yi mpr ov epr ogr am oper at i ons ;–An ev al uat i onofal t er nat i v eappr oac hesf orr eas onabl yac hi ev i ngt heobj ec t i v esandgoal s ;and– I dent i fic at i onofapr opos edappr oac h.

3Over v i ewTheFeasi bi l i t ySt udyi sac r i t i caldoc umentwhi c hdefi nest hei ni t i als y s t em conc ept s , obj ec t i v es ,r equi r ement s ,andal t er nat i v es .Thes t udyal s of or mst hef r amewor kf ort hes y s t em dev el opmentpr oj ec tandes t abl i s hesabas el i nef orf ur t hers t udi es .

4Descr i bet heSt at usQuoFol l owi ngagener al ov er v i ewoft hepr oj ec t ,t heFeas i bi l i t ySt udys houl d es t abl i s ht he" s t at usquo"i nt heSt at e' smanagementofbenefi tpr ogr ams .Thecur r entenvi r onment maybeamanual pr oces s ,anaut omat edpr oces s ,orac ombi nat i onofmanualandaut omat ed f unc t i ons .Theenv i r onmentma ybepaperi nt ens i v eordomi nat edbyel ec t r oni cr ec or ds .The env i r onmentmaybecent r al i z edordi s t r i but ed.Regar dl es sofat t r i but es ,t hec ur r entoper at i ng env i r onments houl dbedes c r i bed.

5Fact or st hatmaybeaddr es sedPr ogr ammat i cf unc t i onsI nf or mat i onar chi t ec t ur eSy s t em ar chi t ec t ur eHar dwar eandsof t war ei nv ent or yI nt er f ac eandmat c hi ngPr oc es si nganddat afl ow di agr amsSt or ageandr et r i ev al I nput sOut put sWor k l oadVal i dat i on/i nt er nal cont r ol Sec ur i t y/ Pr i v ac yEmer genc yr es pons e,back up,anddi s as t err ecov er yPer s onnelSpac eandEnv i r onment

6Definet hePr obl emsOnc et hec ur r entoper at i ngenvi r onmenthasbeendes c r i bed,t hepr obl ems wi t ht hecur r ents y s t em s houl dbedet ai l ed.Pr obl emsmaybef unc t i onal-t hati s ,t hes y s t em maybe i nc ompl et e,notf ul fil l i ngal lt hepr ogr am r equi r ement s .Pr obl emsmaybet ec hni cal-f orex ampl e,t he s y s t em maybet oos l ow,s i z edt oos mal l ,orbeobs ol et eandi neffic i enti nt er msofhar dwar eor s of t war e .Pr obl emsmayal s or el at et os y s t em cos tort oac c es s ,l i mi t i ngt heabi l i t yofper s onnelt o us es y s t em i nf or mat i ont of ul l pot ent i al .Thi ss t epshoul dal s oi nc l udeadet er mi nat i onoft he s er i ous nes sofeachpr obl em andi t seffect sonf act or ss uc haspr ogr am c l i ent sandpr ogr am fi nanc i al consi der at i ons .

7Conver tPr obl emst oSy s t em Obj ec t i v esOnc et hecur r entoper at i onalpr obl emsar ei dent i fi ed,y ou c andev el ops pec i fics y s t em obj ec t i v es .Fore x ampl e,t hes y s t em mayneedt ober edes i gnedt ouse t hepower f ulat t r i but esofdat abasemanagements of t war e .Ort hes y s t em mayneedt ober edesi gned t opr o vi debet t ers er vi cet oc l i ent sort os uppor tt hedi s t r i but edus eandpr oces s i ngofi nf or mat i on.Or t hes y s t em mayneedt ober eengi neer edt os i mpl i f yands t r eaml i newor kpr oc es s esf orgr eat er effic i enc yandeconomy .

8El ement st ocons i derI ndefi ni ngobj ec t i v es ,v ar i ousel ement smus tbec ons i der ed:–pr ogr am needs ,–c os t s ,–l ev el ofeffor t ,–t i mesc hedul es ,–al l owabl eoper at i onalc hanges ,–eas eoff ut ur e

modi fi cat i onandex pans i on,–ands y s t em s ec ur i t yandr el i abi l i t y .What ev ert heel ement s i mpr ov ementneeds ,obj ec t i v esshoul dbedefi nedi na–cl ear ,–spec i fi c ,–andmeasur abl emanner Thi ss houl dusi ngdi ffer entaut omat i ons t r at egi es .

9Syst em obj ec t i v esSy s t em obj ec t i v esar ec r i t i calt oens ui nganal y s i s-whet herc onduct edt o s uppor tt heFeas i bi l i t ySt udy ,r equi r ement sanal y s i s ,ordev el opmentoft es t i ngpl ans .I nt er msoft he Feas i bi l i t ySt udy ,t heobj ec t i v esf or mt hef r amewor kf ort hef or mul at i onoft hei ni t i als y s t em r equi r ement s ,ar eus edt oas c er t ai nt heacc ept abi l i t yofal t er nat i v es ,andf or mt hebas i sf or gener at i ngc os t sandbenefit sdur i ngt heens ui ngCos t / Benefi tAnal y s i s .

10I dent i f ySy s t emsc ons t r ai nt sar ef act or st hatl i eout si de-buthav eadi r ec ti mpac ton-t hes y s t em desi gneffor t .Cons t r ai nt smaybe:Lawsandr egul at i ons-f ore x ampl e,St at e,Feder al ,or i ndependentr egul at or yagenc i esmayr equi r es pec i ficdes i gnappr oac hesf ornews y s t emsor mandat es pec i fi cc hangest oe xi s t i ngs y s t ems .T ec hnol ogi c al -f ore x ampl e,newequi pmentmus tbe c ompat i bl ewi t he xi s t i ngequi pment ;Soc i opol i t i c al -f ore x ampl e,t heGov er normandat est hatal l publ i cass i s t anc eADPf unc t i onsbecombi nedandmanagedbyacommondat abasemanagement s y s t em;Fi nanci al-f orex ampl e,pr opos eddev el opmentandi mpl ement at i oncos t smus tr emai n wi t hi nas pec i fi edbudget .Oper at i onal -f ore x ampl e,s pac e,s t affingl ev el s ,s k i l l mi x ,andc apabi l i t y andc ompet encef ac t or smayl i mi ts y s t em opt i ons .

11I dent i f ySy s t emsc ons t r ai nt sHowev er ,s y s t em c ons t r ai nt sshoul dnotbeus edt oar t i fi ci al l y r es t r i ctordi r ectt hes y s t em.Theobj ec t i v ei st opl ant hebes ts y s t em f ort hepr obl em t obes ol v ed,not t of abr i c at eandi mposec ons t r ai nt st hatl i mi tt hes y s t em al t er nat i v es .Aswi t hobj ec t i v es ,s y s t em c ons t r ai nt sar ec r i t i calt oensui ngphas esoft hef eas i bi l i t ys t udy .Theyc anaffec ts y s t em r equi r ement sandt heacc ept abi l i t yofal t er nat i v es .

12Assumpt i onsAss umpt i onsar ef act or spr edi c t edt oappl yt ot hepr ogr am ors y s t emspr oj ec t .For ex ampl e,t hepr oj ec t ' soper at i onalors y s t em l i f e-t het i mer equi r edt opl an,des i gn,ac qui r e,and i mpl ementt hes y s t em andi t soper at i onal l i f e-mus tbepr edi ct edandt husf or msac r i t i cal as s umpt i ondur i ngt heFeas i bi l i t ySt udy .Thi sas s umpt i ondi r ec t l yaffec t st heper i odoft i mef or c ompar i s onofc os t sandbenefi t sofs y s t em al t er nat i v esand-f oral l pr act i c al pur pos es-s et st he r angeoft i mewi t hi nwhi c ht hes y s t em dev el opmentbr eak ev enpoi ntmus toc c ur .Fourr ul esappl yt o mak i ngas sumpt i ons :–Mak eas s umpt i onswhenes sent i al i nf or mat i onc annotbedet er mi nedor wher et heanal y si si sc r i t i cal l ydependentonc er t ai nf act or s ,condi t i ons ,orf ut ur eev ent s ;–St at e as s umpt i onsr eal i s t i cal l yandi npr ec i s et er ms ;–I nc l udeonl yas sumpt i onswhi c hwi l laffec tt he anal y s i s ;and–Documentt hel ogi cunder l y i ngt heas s umpt i oni nt heev enti t ss oundnes sneedst o ber eas s es s ed.

13Assumpt i onsI naddi t i ont os y s t emsl i f e,ot herc ommonas sumpt i onsi nc os t / benefi tanal y s i sar e: pr oj ec tdev el opmentandi mpl ement at i ons chedul e,es t i mat edf ut ur ewor k l oads ,andpr oj ec t edc os t s andv al ues .As s umpt i onsc anbecat egor i z edas :Cos t / Res our ce,Func t i onal / Pr ogr ammat i c , Tec hni cal ,andSy s t emsLi f e.

14Cost / Resour ceFunc t i onal / Pr ogr ammat i cTechni calReduc edCos t sbyar eabyhowmuc h Cont r ol l edCos t sbyar eai nwhatmannerSt r eaml i nedPr oc es s esi nwhatmannerbywhatmeas ur e ReducedSt affingbyar eabyhowmuc hI mpr ov edSt affingUt i l i z at i onI nwhatmannerbywhat

measur eI ncr eas edPr oduc t i v i t ybyar eabyhowmuc hFewerManual Func t i onsbyar eai nwhat mannerI ncr eas edResour cesbyar eabyhowmuc hI mpr ov edSer v i c est oCl i ent sbyar eai nwhat mannerReduc edEr r orRat ebyar eabyhowmuc hI ncr eas edCol l ect i onsbyar eabyhowmuc h I mpr ov edManagementI nf or mat i onbyar eai nwhatmannerI mpr ov edCont r ol sbyar eabywhat measur eI nt er f ac e/Mat chi ngbyar eai nwhatmannerLessDat aRedundanc ybyar eai nwhat mannerCompl i anc ewi t hFeder al Requi r ement sbyar eai nwhatmannerFas t erRec or dRet r i ev al whatr ecor dsbyhowmuc hMor eTi mel yRepor t i ngwhatr epor t sbyhowmuc hLes sPr oces si ngTi me byar eabyhowmuc hI mpr ov edAcc es sbyar eabyhowmuc hI mpr ov edSec ur i t yi nwhatmannerby whatmeas ur eI ncr eas edAut omat i onbyf unc t i oni nwhatmannerI mpr ov edEmer genc yRes ponse, Bac k up,andRecov er ybyf unc t i oni nwhatmanner...