Lehman txoj cai yog dab tsi?
Lehman txoj cai yog dab tsi?

Video: Lehman txoj cai yog dab tsi?

Video: Lehman txoj cai yog dab tsi?
Video: XENGYANG - NWS YOG DAB TSIS (WHAT'S MEANS) [Official Music Audio] 2024, Kaum ib hlis
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Hauv software engineering, lub kev cai ntawm software evolution xa mus rau ib tug series ntawm kev cai uas Lehman thiab Belady tsim pib hauv 1974 hais txog kev hloov pauv software. Cov kev cai piav qhia txog qhov sib npaug ntawm cov tub rog tsav tsheb tshiab ntawm ib sab, thiab lub zog uas ua rau kev nce qib ntawm lwm qhov tes.

Ib yam li ntawd, E hom system yog dab tsi?

Qhov kawg hom ntawm qhov system proposed los ntawm Lehman yog tus E - hom , los yog embedded- hom . E - hom cov kev pab cuam raug txhais tias yog txhua yam kev pab cuam uas 'ua haujlwm lossis daws qhov teeb meem lossis kev ua haujlwm ntawm lub ntiaj teb tiag'. Lawv cov evolution yog qhov tshwm sim ncaj qha thiab xav txog kev hloov pauv tsis tu ncua hauv lub ntiaj teb tiag tiag.

Ib tug kuj yuav nug, System Evolution yog dab tsi? Software Evolution yog ib lo lus uas hais txog cov txheej txheem ntawm kev tsim software thawj zaug, tom qab ntawd hloov kho raws sijhawm rau ntau yam laj thawj, piv txwv li, ntxiv cov yam ntxwv tshiab lossis tshem tawm cov haujlwm tsis siv neeg thiab lwm yam.

Ib yam li ntawd, koj tuaj yeem nug, qhov program evolution dynamics yog dab tsi?

Program evolution dynamics yog kev kawm txog kev hloov pauv. Program evolution yog tus txheej txheem tswj tus kheej. Cov yam ntxwv zoo xws li qhov loj me; lub sijhawm ntawm kev tso tawm; tus naj npawb ntawm cov ntaub ntawv yuam kev yog kwv yees li invariant rau txhua qhov system tso tawm.

Dab tsi yog software txhim kho paradigm?

Software Development Paradigms . Keeb kwm, Software developers tau sim peb qhov loj software kev loj hlob paradigms : txheej txheem, cov ntaub ntawv tsav tsheb, thiab cov khoom taw qhia. Tsis tas li ntawd, ntau qhov ntxov tshaj plaws software tsim tau tsim raws li ad hoc lossis impromptu paradigms.

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