Cov txheej txheem:
Video: Kev nthuav qhia cov ntaub ntawv yog dab tsi?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
Kev nthuav qhia ntawm cov ntaub ntawv Qhov no yog hais txog tus koom haum ntawm cov ntaub ntawv mus rau hauv cov ntxhuav, graphs lossis kab kos, kom cov lus xaus thiab kev txheeb cais tuaj yeem muab tau los ntawm cov kev ntsuas sau. Cov ntaub ntawv yuav raug nthuav tawm hauv (3 Txoj Kev): - Textual - Tabular lossis - graphical.
Ua kom pom qhov no, cov txheej txheem ntawm kev nthuav qhia cov ntaub ntawv yog dab tsi?
Qhia cov lej hauv cov lus
- Thaum twg los siv rooj. Tables yog ib txoj hauv kev zoo los nthuav qhia cov ntaub ntawv:
- Rooj tsim.
- Piv txwv ntawm kev tsis zoo thiab kev coj ua zoo dua hauv kev nthuav qhia cov ntaub ntawv hauv cov ntxhuav.
- Bar kab kos.
- Histograms.
- Pie kab kos.
- Kab graphs.
- Scatter cov phiaj xwm.
Tsis tas li ntawd, kev nthuav qhia cov ntaub ntawv yog dab tsi? Textual nthuav qhia cov ntaub ntawv txhais tau tias nthuav tawm cov ntaub ntawv nyob rau hauv daim ntawv ntawm cov lus, kab lus thiab kab lus. Thaum graphical kev nthuav qhia cov ntaub ntawv yog qhov nrov tshaj plaws thiab siv dav hauv kev tshawb fawb, kev nthuav qhia ntawv tso cai rau tus kws tshawb fawb los nthuav qhia qhov zoo cov ntaub ntawv uas tsis tuaj yeem nthuav tawm hauv graphical lossis tabular daim ntawv.
Cov lus nug tseem yog, qhov tseem ceeb ntawm kev nthuav qhia cov ntaub ntawv yog dab tsi?
Cov ntawv, cov lus, thiab cov duab rau cov ntaub ntawv thiab cov ntaub ntawv kev nthuav qhia yog cov cuab yeej sib txuas lus muaj zog heev. Lawv tuaj yeem ua ib tsab xov xwm yooj yim rau kev nkag siab, nyiam thiab txhawb nqa kev txaus siab ntawm cov neeg nyeem, thiab nthuav tawm cov ntaub ntawv nyuaj ntau heev.
Dab tsi yog 5 txoj hauv kev los sau cov ntaub ntawv?
Qee cov txheej txheem sau cov ntaub ntawv zoo tshaj plaws suav nrog cov kev tshawb fawb qhib thiab cov lus nug, kev xam phaj, pab pawg tsom xam, kev soj ntsuam , case studies, thiab lwm yam.
Pom zoo:
Tabular thiab graphical kev nthuav qhia ntawm cov ntaub ntawv yog dab tsi?
Tabular thiab graphical nthuav qhia cov ntaub ntawv. 1. Ib daim duab plaub ntawm cov ntaub ntawv uas cov ntaub ntawv tau muab tso rau hauv kab thiab kab. Cov ntaub ntawv tiag tiag hauv ib lub rooj tuav cov kab, piv txwv li, feem pua, zaus, cov qhabnias xeem, txhais tau tias, 'N' (ntau tus qauv), thiab lwm yam
Cov ntaub ntawv txuas ntxiv rau daim ntawv nthuav qhia yog dab tsi?
Cov ntaub ntawv nthuav dav dav dav thiab lawv cov ntaub ntawv tawm tswv yim suav nrog XLSX (Microsoft Excel Qhib XML Spreadsheet), ODS (OpenDocument Spreadsheet) thiab XLS (Microsoft Excel Binary File Format)
Thaum cov lus tau hla tawm cov ntaub ntawv kuaj xyuas feem ntau nthuav tawm cov ntawv sau thawj nrog kev pab ntawm dab tsi?
Infrared luminescence yog siv rau: Qhia tawm cov ntawv sau uas tau muab tshem tawm THIAB kuaj pom yog tias ob tus lej sib txawv tau siv rau hauv kev sau ntawv. Cov kws tshuaj xyuas cov ntaub ntawv feem ntau nthuav tawm cov ntawv sau thawj ntawm cov lus uas tau hla nrog kev pab ntawm: Infrared tawg
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