Video: Yuav ua li cas yog kev sib raug zoo ntawm ib tug architecture thiab module theem tsim?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
Software Kev tsim vaj tsev yog cov tsim ntawm tag nrho cov system, thaum Software Tsim hais txog qhov tshwj xeeb module / tivthaiv / chav kawm qib.
Tsis tas li ntawd, qhov txawv ntawm architecture thiab tsim yog dab tsi?
Kev tsim vaj tsev yog ib txoj kev npaj rau cov qauv ntawm ib yam dab tsi. Tsim yog ib txoj kev npaj los tsim ib yam dab tsi. Ib qho yooj yim txoj kev xav txog cov qhov sib txawv ntawm architecture thiab tsim yog xav txog cov architecture ntawm ib lub tsev chaw ua haujlwm piv nrog nws sab hauv tsim.
Qhov thib ob, software architecture txhais li cas? Software architecture hais txog cov qauv tsim ntawm a software system thiab kev qhuab qhia ntawm kev tsim cov qauv thiab cov tshuab. Txhua tus qauv muaj software cov ntsiab lus, kev sib raug zoo ntawm lawv, thiab cov khoom ntawm ob lub ntsiab lus thiab kev sib raug zoo.
Ib yam li ntawd, tib neeg nug, qhov txawv ntawm kev tsim thiab architecture hauv engineering software yog dab tsi?
Ib yam li tsim cov qauv, muaj vaj tse Qauv: MVC, 3-tier txheej tsim , lwm. Software tsim yog hais txog tsim tus kheej modules / Cheebtsam. Yog li luv luv, Software architecture yog xav paub ntxiv txog cov tsim ntawm tag nrho cov system, thaum software tsim hais txog module / tivthaiv / chav kawm qib.
Dab tsi txiav txim siab zoo software architecture?
Nov yog kuv AAA cov hauv paus ntsiab lus ntawm kev txhais zoo software architecture : Kev lav phib xaub: zoo software architecture ua txhua pab neeg tuav lub luag haujlwm rau nws lub hom phiaj kev lag luam. Amortized: zoo software architecture txhawb kev xav rau pem hauv ntej, tso cai rau tus nqi upfront ntawm infrastructure amortized.
Pom zoo:
Puas txhais tau tias yog kev sib raug zoo ntawm cov khoom ntawm ib yam khoom thiab lub peev xwm ntawm tus neeg sawv cev uas muab cov lus qhia rau kev siv cov khoom?
Kev them nyiaj yog kev sib raug zoo ntawm cov khoom ntawm ib yam khoom thiab lub peev xwm ntawm tus neeg sawv cev uas txiav txim siab seb qhov khoom siv tau li cas
Vim li cas kev sib raug zoo algebra siv nyob rau hauv kev sib raug zoo database tswj?
RELATIONAL ALGEBRA yog ib hom lus nug uas siv dav heev. Nws sau cov xwm txheej ntawm kev sib raug zoo raws li kev tawm tswv yim thiab muab qhov tshwm sim ntawm kev sib raug zoo raws li cov zis. Nws siv ntau yam haujlwm los ua qhov haujlwm no. Relational algebra operations yog ua recursively ntawm kev sib raug zoo
Dab tsi yog qhov txawv ntawm kev sib raug zoo unary kev sib raug zoo binary thiab kev sib raug zoo ternary?
Kev sib raug zoo tsis sib xws yog thaum ob tus neeg koom hauv kev sib raug zoo yog tib lub koom haum. Piv txwv li: Cov ncauj lus yuav yog qhov yuav tsum tau ua ua ntej rau lwm yam kev kawm. Kev sib raug zoo ternary yog thaum peb lub koom haum koom nrog kev sib raug zoo
Dab tsi yog qhov txawv ntawm kev sib raug zoo thiab tsis muaj kev sib raug zoo databases?
Qhov sib txawv loj ntawm lawv yog li cas lawv tuav cov ntaub ntawv. Relational databases are structured.Non-relational databases are document-oriented. Qhov no hu ua cov ntaub ntawv hom cia tso cai ntau 'qeb' ntawm cov ntaub ntawv khaws cia hauv ib qho kev tsim lossis Cov Ntaub Ntawv
Yuav ua li cas koj tsim ib tug rau ntau txoj kev sib raug zoo nyob rau hauv ib tug database system?
Txhawm rau tsim kom muaj kev sib raug zoo ib leeg rau ob qho tib si ntawm thaj chaw (feem ntau yog thawj qhov tseem ceeb thiab txawv teb chaws qhov tseem ceeb) yuav tsum muaj qhov ntsuas tshwj xeeb. Txhawm rau tsim kom muaj kev sib raug zoo ib-rau-ntau Lub teb ntawm ib sab (feem ntau yog qhov tseem ceeb) ntawm kev sib raug zoo yuav tsum muaj qhov ntsuas tshwj xeeb