Hauv cov lus tsis yog txheej txheem, tus neeg siv yuav tsum qhia tsuas yog "yuav ua li cas" thiab tsis yog "yuav ua li cas". Nws tseem yog lub npe hu ua siv los yog lus ua haujlwm. Nws koom nrog kev txhim kho cov haujlwm los ntawm lwm cov haujlwm los tsim cov haujlwm nyuaj dua.
Puas yog lus tshaj tawm?
Cov lus tshaj tawm, tseem hu ua nonprocedural lossis qib siab heev, yog programming lus uas (zoo tshaj) ib qho kev qhia tshwj xeeb yuav tsum tau ua dua li yuav ua li cas. Hauv cov lus zoo li no tsis tshua muaj qhov sib txawv ntawm qhov tshwj xeeb ntawm qhov kev zov me nyuam thiab…
lus txheej txheem yog dab tsi yog lus tsis yog txheej txheem?
Cov txheej txheem thiab cov lus tsis yog txheej txheem yog cov qauv kev suav rau kev qhia feem ntau cov kev ua haujlwm niaj hnub no. Qhov sib txawv loj ntawm cov qauv kev suav no yog cov lus txheej txheem yog kev hais kom ua thaum cov lus tsis yog txheej txheem yog ua haujlwm taw qhia.
Cov qauv lus txheej txheem yog dab tsi?
Ib lus txheej txheem yog ib hom lus hauv computer programming uas ua raws, raws li, cov lus txib. Piv txwv ntawm cov lus txheej txheem hauv computer yog BASIC, C, FORTRAN, Java, thiab Pascal. … Cov neeg kho kho no pab cov neeg siv tsim cov txheej txheem programming siv ib lossis ntau hom lus, sim cov cai, thiab kho cov kab hauv kab.
Vim li cas SQL hu ua lus tsis yog txheej txheem?
Qee lub sij hawm SQL yog tus yam ntxwv tsis yog txheej txheem vim cov lus txheej txheem feem ntauxav kom cov ntsiab lus ntawm cov haujlwm yuav tsum tau teev tseg, xws li qhib thiab kaw cov rooj, thauj khoom thiab tshawb nrhiav indexes, lossis flushing buffers thiab sau cov ntaub ntawv rau filesystems. … Cov Ntaub Ntawv Query Language (DQL)
