Video: Dab tsi yog cov ntaub ntawv ntawm lub computer?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
Cov ntaub ntawv hauv computer yog cov ntaub ntawv ua tiav lossis khaws cia los ntawm a lub computer . Cov ntaub ntawv no yuav yog nyob rau hauv daim ntawv ntawm cov ntaub ntawv, cov duab, suab clips, software programs, los yog lwm yam cov ntaub ntawv . Cov ntaub ntawv hauv computer tej zaum yuav ua tau los ntawm cov computer cov CPU thiab khaws cia rau hauv cov ntaub ntawv thiab folders ntawm lub computer cov hard disk.
Ntawm no, dab tsi yog cov ntaub ntawv hauv computer nrog piv txwv?
Cov ntaub ntawv yog txhais raws li qhov tseeb lossis cov duab, lossis cov ntaub ntawv uas tau khaws cia hauv lossis siv los ntawm a lub computer . Ib piv txwv ntawm cov ntaub ntawv yog cov ntaub ntawv sau rau ib daim ntawv tshawb fawb. Ib piv txwv ntawm cov ntaub ntawv yog email.
Tsis tas li ntawd, cov ntaub ntawv hauv cov lus yooj yim yog dab tsi? Cov Yooj yim English Wiktionary has a definition for: cov ntaub ntawv . Cov cov ntaub ntawv lo lus txhais tau tias "paub tseeb". Cov ntaub ntawv tshwj xeeb yog hais txog cov lej, tab sis tuaj yeem txhais tau lus , suab, thiab cov duab. Metadata yog cov ntaub ntawv txog cov ntaub ntawv . Keeb kwm, cov ntaub ntawv yog lub plural ntawm Latin lus datum, los ntawm dare, lub ntsiab lus "muab".
Ib yam li ntawd, nws yog nug, dab tsi yog qhov zoo tshaj plaws txhais rau cov ntaub ntawv?
Hauv kev suav, cov ntaub ntawv yog cov ntaub ntawv uas tau muab txhais ua ib daim ntawv uas muaj txiaj ntsig zoo rau kev txav los yog ua haujlwm. Kev txheeb ze rau niaj hnub computers thiab kis xov xwm, cov ntaub ntawv yog cov ntaub ntawv hloov dua siab tshiab rau hauv binary digital daim ntawv. Nws yog txaus rau cov ntaub ntawv siv los ua ib hom lus tshwj xeeb lossis ntau ntau yam.
Cov ntaub ntawv hauv computer yog dab tsi?
Muaj ob tug general hom ntawm cov ntaub ntawv : analog thiab digital. Xwm yog analog, thaum a lub computer yog digital. Tag nrho cov digital cov ntaub ntawv muab khaws cia ua tus lej binary. Ob ntawm cov lej siv dav tshaj plaws hom ntaub ntawv yog integers, uas muaj tag nrho cov zauv, thiab decimals, uas tseem hu ua floats los yog doubles.
Pom zoo:
Dab tsi yog qhov sib txawv ntawm pab pawg cov ntaub ntawv thiab cov ntaub ntawv tsis yog pawg?
Ob leeg yog cov ntaub ntawv muaj txiaj ntsig ntawm cov ntaub ntawv tab sis qhov sib txawv ntawm lawv yog cov ntaub ntawv tsis muaj ntaub ntawv yog rawdata. Qhov no txhais tau hais tias nws nyuam qhuav tau sau tab sis tsis txheeb rau hauv ib pawg lossis cov chav kawm. Ntawm qhov tod tes, groupeddata yog cov ntaub ntawv uas tau teeb tsa ua pawg los ntawm cov ntaub ntawv nyoos
Dab tsi yog lub hom phiaj ntawm delimiters nyob rau hauv cov ntawv sau npe ob hom ntawv cov ntaub ntawv delimiters?
Cov ntaub ntawv delimited yog cov ntawv nyeem siv los khaws cov ntaub ntawv, uas txhua kab sawv cev rau ib phau ntawv, tuam txhab, lossis lwm yam, thiab txhua kab muaj cov teb sib cais los ntawm tus lej
Dab tsi yog qhov sib txawv ntawm lub thawv thiab lub thawv ntawv thiab lub thawv ntawv yog dab tsi?
Ib lub thawv thiab cov ntawv nplawm (qee zaum hu ua boxplot) yog ib daim duab uas nthuav tawm cov ntaub ntawv los ntawm tsib lub ntsiab lus. Nyob rau hauv ib lub thawv thiab whisker zajlus: qhov kawg ntawm lub thawv yog lub sab sauv thiab sab quartiles, yog li lub thawv spans lub interquartile ntau yam. qhov nruab nrab yog cim los ntawm ib txoj kab ntsug hauv lub thawv
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