UML-cov ntaub ntawv daim duab

Lub simulation siv tsib hom kab kos, thiab UML-cov ntaub ntawv daim duab yog ib tug txhais tau tias rau simulating dynamic yam ntawm lub cev uas nyob rau hauv modeling cov cwj pwm ntawm cov chav kawm ntawv systems thiab subsystems ua si ib tug loj luag hauj lwm. Nyob rau hauv txhua tus ntawm cov kos duab ib tug ntau ntawm lam, siv tus neeg mob, thiab cov kev sib raug zoo nruab nrab ntawm lawv.

UML-cov ntaub ntawv daim duab yog dav siv nyob rau hauv ntau yam teb, tshwj xeeb tshaj yog nyob rau hauv qhov chaw nyob qhov twg nws yuav tsum tau ntawm ib tug system nyob rau hauv cov nqe lus ntawm qhov sib txawv variations ntawm kev siv los yog precedents. Nyob rau hauv feem ntau, nws yog assumed no modeling lub system ntsiab lus teb ntawm ib tug hauv chav kawm ntawv los yog subsystem los yog modeling yuav tsum uas siv rau tus cwj pwm ntawm tus xaiv yam khoom.

Ntawm kuj zoo kawg tseem ceeb yog siv cov ntaub ntawv daim duab rau specifying, visualization thiab cov ntaub ntawv system kev coj cwj pwm. Siv nws, developers yooj yim rau to taub lub system, subsystem, los yog cov chav kawm ntawv, raws li tau zoo raws li mus saib nyob rau cov kev pab cuam ntawm kev siv lwm yam rau ib tug lub ntsiab lus teb. Tej UML-daim duab yog ntawm kev tseem ceeb rau kev soj ntsuam executable tshuab nrog lawv tsim, raws li zoo raws li to taub zoo dua lawv nrog cov qauv, tshwj xeeb yog nyob rau hauv rov qab engineering.

Qauv precedent - nws yog ib tug uas zoo mus nrhiav ib tug lwm txoj rau lub ntsiab scenario, uas ua rau yus kawm tau zoo. Nyob rau txhua txhua kauj ruam, nug koj tus kheej cov nqe lus nug dua thiab dua: "Dab tsi yuav tshwm sim?" Thiab nyob rau hauv particular, "Yuav ua li cas yuav mus tsis ncaj ncees lawm," nyob qhov twg lub zoo tshaj plaws los ntawm thaum pib mus nrhiav tau tawm tag nrho cov extensions tej yam kev mob uas yog tau. Qhov no yuav pab tsis txhob tsis meej pem nyob rau hauv lub neej yav tom ntej, thaum ua hauj lwm rau ntawm qhov yuav tshwm.

Tag nrho cov tej yam kev mob rau kev daws qhov teeb meem, uas yog tsuas ua tau, nws yog ib qhov zoo tshaj plaws los kawm los ntawm cov nyuam. Qhov no txoj kev yuav pab kom tsis txhob raug bogged nyob rau hauv ib tug quagmire thaum ua hauj lwm nyob rau hauv lub txim. Yog li ntawd, yog tias ua tau, xav txog ntau li ntau tau lub tej yam kev mob, thiab qhov no yuav ua rau ib tug txo nyob rau hauv uas tsis nyob rau hauv lub neej yav tom ntej.

Qhov zoo tshaj plaws kev xaiv rau kev ua hauj lwm nrog ib tug duab daim duab precedents rooj uas qhia tau hais tias nws txheem. Nws yog dog dig zoo li lub ntsiab lus teb daim duab, uas yog siv nyob rau hauv lub yam ntxwv txoj kev. Tom qab tag nrho, lub rooj qhia tau hais tias ib thaj tsam ntawm lub system, raws li zoo raws li nws cov tangency nrog lub ntiaj teb sab nraum.

Lub daim ntawv kom meej meej tso tawm kom pom precedents lam, siv tus neeg mob, raws li tau zoo raws li lub kev sib raug zoo nruab nrab ntawm lawv:

- tua ntawm lam ntawm ib tug precedent;

- precedents uas lwm precedents.

Hais txog qhov kev txheem ntawm ib tug precedent nyob rau hauv lub modeling ntawm UML tsis hais dab tsi, thiab txoj kev uas cuag tau cov daim ntawv qhia tau hais tias nws tag nrho. Txawm li cas los, koj yuav ua tsis tau daim ntawv. Kws txawj pom zoo kom txoj kev loj hlob ntawm ib tug precedent tsis ua ntau dhau heev lawm lub dag zog mus ua tau ib lub daim ntawv. Nws yuav zoo dua yog tias koj mloog zoo rau hauv cov ntawv nyeem ntawm lub ntsiab lus.

UML siv cov ntaub ntawv daim duab, nyob rau hauv tas li ntawd yuav muaj xws li kev sib raug zoo, muaj lwm yam, piv txwv li ntev. Nws yog nws cov kws txawj pom zoo kom koj tsis txhob. Yog vim li cas cov lus dag nyob rau hauv lub fact tias feem ntau tag nrho txoj kev loj hlob pab neeg ib tug ntau lub sij hawm muab rau cov kev saib xyuas ntawm ntau yam kev sib raug zoo ntawm kev siv tus neeg mob. Qhov no yog ib tug pov tseg ntawm lub dag zog. Tom qab soj ntsuam nrog ib phau ntawv piav qhia ntawm precedent yog ntau npaum li cas yooj yim, nws yog no hais tias lub yeej muaj tseeb tus nqi ntawm zais technology.