Video: Compressing ib cov ntaub ntawv txhais li cas?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
Cov ntaub ntawv compression yog data compression txoj kev uas lub logical loj ntawm a ntaub ntawv yog txo kom txuag tau qhov chaw disk kom yooj yim dua thiab sai dua kis tau tus mob hauv lub network lossis Is Taws Nem. Nws enables cov creation ntawm ib tug version ntawm ib tug lossis ntau dua cov ntaub ntawv nrog tib cov ntaub ntawv ntawm qhov loj me me dua li qhov qub ntaub ntawv.
Ib yam li ntawd, compressing cov ntaub ntawv yog dab tsi?
A compressed ntaub ntawv yog ib qho ntaub ntawv uas muaj ib lossis ntau dua cov ntaub ntawv los yog phau ntawv uas me dua lawv cov thawj ntaub ntawv qhov loj. Cov no cov ntaub ntawv ua kom rub tawm sai dua yooj yim dua thiab tso cai rau cov ntaub ntawv ntau ntxiv khaws cia rau hauv cov xov xwm uas txav tau. Feem ntau compressed ntaub ntawv extensions yog. ZIP ,. RAR,. ARJ,. TAR. GZ, and. TGZ.
Ib yam li ntawd, nws puas phem rau compress cov ntaub ntawv? Cov compression txheej txheem txo qhov loj me ntawm lub computer ntaub ntawv los ntawm lub cev tshem tawm cov ntaub ntawv los ntawm ntaub ntawv uas rov qab los yog khoob. Tus chij siv qhov chaw tsawg dua, tab sis muaj qhov tsis zoo rau compressing cov ntaub ntawv . Koj txawm compress thiab uncompress cov ntaub ntawv khaws cia rau ntawm afloppy disk.
Khaws qhov no hauv kev txiav txim siab, dab tsi yog kev siv compressing cov ntaub ntawv?
A compression cov ntaub ntawv utility yog ib qho software program uas yog siv rau compress los yog decompress cov ntaub ntawv . Feem ntau xws li ib tug software kev pab cuam yog siv rau compressfiles ntawm ntau hom ntawv uas tsis ua haujlwm lawm siv thiab txo lawv qhov loj me kom lawv siv li 40 feem pua tsawg qhov chaw ntawm hard disk.
Puas compressing ib cov ntaub ntawv ua rau nws me me?
Compressing cov ntaub ntawv ua lawv me me , uas muaj ob lub ntsiab zoo: lub cov ntaub ntawv siv qhov chaw khaws cia tsawg dua, thiab lawv hloov pauv sai dua thaum raug xa mus rau hauv computers. Hauv Windows, txoj hauv kev los ua compress afile yog tig mus ua ib tug ZIP file , uas txo cov cov ntaub ntawv tag nrho loj yam tsis poob tej ntaub ntawv.
Pom zoo:
Vim li cas cov ntaub ntawv tiaj tus tsis zoo dua li cov ntaub ntawv sib raug zoo?
Ib lub rooj ua ntaub ntawv tiaj tus yog qhov tseem ceeb rau kev sau cov ntaub ntawv tsawg. Tab sis cov ntaub ntawv loj loj tuaj yeem ua tsis tau raws li nws siv ntau qhov chaw thiab nco dua li cov ntaub ntawv sib txheeb. Nws kuj yuav tsum tau muab cov ntaub ntawv tshiab ntxiv txhua zaus koj nkag mus rau cov ntaub ntawv tshiab, qhov kev sib raug zoo database tsis
Kuv yuav hloov cov ntaub ntawv tab delimited rau cov ntaub ntawv csv li cas?
Mus rau cov ntawv qhia zaub mov, xaiv 'OpenCSVTab-Delimited File' (lossis tsuas yog nias Ctrl + O), thiab tom qab ntawd los ntawm lub thawv qhib, xaiv cov ntaub ntawv tab-delimited qhib. Koj tuaj yeem luam cov tab-delimited txoj hlua mus rau clipboard thiab tom qab ntawd siv 'Qhib Cov Ntawv Hauv Cov Ntawv Teev Npe' xaiv (Ctrl + F7)
Puas yog compressing ib cov ntaub ntawv txo nws qhov loj?
Cov ntaub ntawv compression yog siv los txo cov ntaub ntawv loj ntawm ib lossis ntau cov ntaub ntawv. Thaum cov ntaub ntawv ora pawg ntawm cov ntaub ntawv raug compressed, qhov tshwm sim'archive' feem ntau siv li 50% mus rau 90% tsawg dua qhov chaw disk dua li cov ntaub ntawv qub
Vim li cas kem taw qhia cov ntaub ntawv khaws cia ua cov ntaub ntawv nkag ntawm disks sai dua li kab qhia cov ntaub ntawv khaws cia?
Kem oriented databases (aka columnar databases) yog qhov tsim nyog rau kev ntsuas kev ua haujlwm ntau dua vim tias cov ntaub ntawv hom ntawv (kem hom) qiv nws tus kheej kom nrawm dua cov lus nug ua - scans, aggregation thiab lwm yam. Ntawm qhov tod tes, kab oriented databases khaws ib kab (thiab tag nrho nws. kab) contiguously
Dab tsi yog cov teeb meem ntawm kev tswj cov ntaub ntawv hauv cov ntaub ntawv ib txwm muaj?
Nyob rau tib lub sijhawm, qhov kev tswj hwm cov ntaub ntawv ib puag ncig tsim teeb meem xws li cov ntaub ntawv rov ua dua thiab tsis sib xws, cov kev pab cuam-cov ntaub ntawv dependence, inflexibility, tsis muaj kev ruaj ntseg, thiab tsis muaj cov ntaub ntawv sib qhia thiab muaj