Cov chav kawm ciam teb sawv cev li cas?
Cov chav kawm ciam teb sawv cev li cas?

Video: Cov chav kawm ciam teb sawv cev li cas?

Video: Cov chav kawm ciam teb sawv cev li cas?
Video: Tshuaj theem vim li cas thiaj tau nqi ?/ Siv kho mob dab tsi?/paris polyphylla use for? 2024, Hlis ntuj nqeg
Anonim

A ciam teb chav kawm yog a chav kawm siv los ua qauv kev sib cuam tshuam ntawm qhov system ib puag ncig thiab nws cov haujlwm sab hauv. Xws li kev sib cuam tshuam cuam tshuam nrog kev hloov pauv thiab txhais cov xwm txheej thiab ceeb toom kev hloov pauv hauv qhov kev nthuav qhia (xws li interface).

Ua raws li qhov no hauv kev txiav txim siab, dab tsi yog ciam chav kawm hauv UML?

cov chav kawm ciam teb yog cov nyob ntawm ciam teb ntawm qhov system - chav kawm uas koj lossis lwm lub tshuab cuam tshuam nrog. qhov chaw cov chav kawm yog koj cov chaw lag luam xws li "tus neeg" thiab "bank account" tswj chav kawm siv qee qhov kev lag luam logic lossis lwm yam.

Ib tug kuj yuav nug, dab tsi yog chav tswj hauv chav kawm tsim qauv? Tswj cov chav kawm : Tswj cov chav kawm sawv cev rau kev sib koom ua ke, sib luag, kev hloov pauv, thiab tswj ntawm lwm yam khoom thiab feem ntau yog siv los encapsulate tswj muaj feem xyuam rau ib qho kev siv tshwj xeeb.

Kuj kom paub, cov chav kawm tsom xam yog dab tsi?

Cov chav kawm tsom xam sawv cev rau cov qauv kev xav thaum ntxov rau 'cov khoom hauv lub cev uas muaj lub luag haujlwm thiab tus cwj pwm'. Lawv thaum kawg evolve rau hauv chav kawm thiab subsystems hauv Cov Qauv Tsim.

Dab tsi yog qhov chaw nyob hauv daim duab kab ke?

A kab kos duab yog ua los ntawm ob peb ntawm cov lifeline notations uas yuav tsum tau teem horizontally hla saum toj no daim duab . Daim ntawv sau txog lub neej nrog lub cim ua yeeb yam yog siv thaum qhov tshwj xeeb kab kos duab yog muaj los ntawm cov ntaub ntawv siv. Lifeline nrog ib qhov chaw element sawv cev cov ntaub ntawv system.

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