Cov txheej txheem:

Vim li cas peb thiaj siv daim duab qhia ua ntu?
Vim li cas peb thiaj siv daim duab qhia ua ntu?

Video: Vim li cas peb thiaj siv daim duab qhia ua ntu?

Video: Vim li cas peb thiaj siv daim duab qhia ua ntu?
Video: Tshuaj theem vim li cas thiaj tau nqi ?/ Siv kho mob dab tsi?/paris polyphylla use for? 2024, Kaum ib hlis
Anonim

Cov kab kos duab yog ib qho zoo daim duab rau siv los sau ib qho kev xav tau ntawm qhov system thiab tshem tawm qhov system tsim. Yog vim li cas kab kos duab Nws yog ib qho tseem ceeb heev vim hais tias nws qhia tau hais tias kev sib cuam tshuam logic ntawm cov khoom nyob rau hauv lub system nyob rau hauv lub sij hawm txiav txim uas cov kev sib tshuam tshwm sim.

Tom qab ntawd, dab tsi yog txhais los ntawm daim duab kab ke?

A kab kos duab qhia cov khoom sib cuam tshuam tau teem caij rau lub sijhawm ib ntus . Nws depicts cov khoom thiab cov chav kawm koom nrog hauv scenario thiab cov ib ntus ntawm cov lus sib pauv ntawm cov khoom xav tau los ua haujlwm ntawm qhov xwm txheej. Daim duab kab ke qee zaum hu ua kev tshwm sim daim duab los yog xwm txheej scenarios.

Ib yam li ntawd, dab tsi yog cov ntsiab lus ntawm kab kos duab? Cov kab hauv qab no thiab cov npoo feem ntau yog kos hauv UML kab kos duab : lifeline, execution specification, message, ua ke fragment, kev sib tshuam siv, xeev invariant, txuas ntxiv, kev puas tsuaj tshwm sim. Major cov ntsiab lus ntawm kab kos duab muaj nyob rau hauv daim duab hauv qab no.

Tsuas yog li ntawd, dab tsi yog qhov muaj txiaj ntsig ntawm daim duab kab ke sau cov khoom ntawm nws?

Cov txiaj ntsig ntawm kab kos duab Sawv cev cov ntsiab lus ntawm a UML siv li cas. Ua qauv rau cov logic ntawm cov txheej txheem sophisticated, kev ua haujlwm, lossis kev ua haujlwm. Saib seb cov khoom thiab cov khoom sib cuam tshuam nrog ib leeg los ua kom tiav cov txheej txheem. Npaj thiab nkag siab txog cov ncauj lus ntxaws ntxaws ntawm qhov xwm txheej uas twb muaj lawm lossis yav tom ntej.

Ua li cas koj nyeem ib daim duab kab ke?

Yuav Ua Li Cas Nyeem Ib Daim Duab Sib Txuas

  1. Object Lifeline. Sawv cev rau ntawm daim duab los ntawm ib lub thawv ntawv nrog ib txoj kab ntsug ntsug nqes hauv qab nws.
  2. Ua kom. Sawv cev rau ntawm daim duab los ntawm ib lub thawv nyias nyias superimposed hla kab dashed ntawm ib yam khoom lifeline.
  3. Synchronous lus.
  4. Cov lus tsim.
  5. Nres Xov.
  6. Xa lus rov qab.
  7. Asynchronous lus.

Pom zoo: