Ib qho piv txwv zoo ntawm hom lus 4GL no yog PowerBuilder Cov cuab yeej no tuaj yeem siv rau kev txhim kho daim ntawv thov kev lag luam feem ntau muaj nyob rau hauv ib pob uas tso cai rau ob qho tib si kev lag luam cov ntaub ntawv tswj thiab tshaj tawm, yog li lawv tuaj nrog GUI cov ntxaij vab tshaus thiab tshaj tawm cov neeg kho.
Yim yog hom lus twg?
fourth-generation languages ( 4GL), computer programming languages uas yog npaj kom yooj yim rau cov neeg siv dua li tshuab (thawj tiam), lus los ua ke (thib ob), thiab cov laus cov lus siab (tiam thib peb).
Qhov twg hauv qab no yog piv txwv ntawm 4GLs?
Pioneers, xws li MAPPER, NOMAD, RAMIS, SQL, thiab FOCUS yog piv txwv tsis ua haujlwm 4GLs nrog cov ntaub ntawv zoo heev.
Puas C++ yog hom lus thib plaub?
Cov lus thib ob yog hom lus sib dhos tshuab, thiab cov lus thib peb (3GLs) yog cov lus hais qib siab, xws li FORTRAN, COBOL, BASIC, Pascal, C / C ++ thiab Java. Ntau hom lus yeej yog ib qho sib xyaw ntawm ob qho peb- thiab plaub tiam neeg
Puas yog SQL yog hom lus thib 4?
Tam sim no, nws tsis yog hom lus tib yam li, hais, Java lossis C ++: SQL suav tias yog hom lus thib plaub (4GL), qhov Java thiab C ++ yog. peb tiam lus (3GLs). Cov lus thib plaub yog cov lus programming uas nyob ze rau tib neeg cov lus dua li cov lus siab zoo li Java.
