Cov txheej txheem:
Video: Peb khaws cov ntaub ntawv li cas?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
Txoj Kev Sau Cov Ntaub Ntawv
- Tallies / suav. Txoj Kev nyab xeeb rau Tsev Kawm Ntawv Tub Ntxhais Kawm Tally Forms.
- Kev tshawb fawb. Kev soj ntsuam los yog daim ntawv nug feem ntau yog siv los ntsuas.
- Kev soj ntsuam thiab Kev Tshawb Fawb. Kev soj ntsuam ntawm Lub Tsev Kawm Ntawv: Cov Tub Ntxhais Kawm tuaj txog lossis tawm mus.
- Kev xam phaj.
- Cov ntaub ntawv uas twb muaj lawm.
- Kev ntsuas ntsuas.
- Ua hauj lwm nrog Tsev Kawm Ntawv.
Ntawm no, vim li cas peb thiaj sau cov ntaub ntawv?
Cov cov ntaub ntawv peb sau los ntawm cov neeg siv khoom pab txhim kho peb cov kev pabcuam rau txhua tus. Peb siv cov cov ntaub ntawv los tswj kev txiav txim, xa cov khoom thiab cov kev pabcuam, kev them nqi, sib txuas lus nrog koj txog kev xaj, khoom, kev pabcuam thiab kev tshaj tawm, hloov kho peb cov ntaub ntawv thiab feem ntau tuav koj cov nyiaj nrog peb.
Tsis tas li ntawd, Lub Koom Haum sau cov ntaub ntawv li cas? Cov tuam txhab khaws cov ntaub ntawv hauv ntau txoj hauv kev los ntawm ntau qhov chaw. "Cov ntaub ntawv neeg siv khoom tuaj yeem ua tau sau nyob rau hauv peb txoj kev - los ntawm kev nug ncaj qha rau cov neeg siv khoom, los ntawm kev taug qab cov neeg siv khoom ncaj qha, thiab los ntawm kev ntxiv lwm qhov chaw ntawm cov neeg siv khoom cov ntaub ntawv rau koj tus kheej, "hais Hanham.
Ib sab saum toj no, dab tsi yog 5 txoj hauv kev los sau cov ntaub ntawv?
Cov txheej txheem sau cov ntaub ntawv zoo
- Open-Ended Surveys thiab Questionnaires. Qhov sib txawv ntawm qhov kaw-kawg yog qhib-kawg kev tshawb fawb thiab cov lus nug.
- 1-on-1 Interviews. Kev xam phaj ib-rau-ib (los yog ntsej muag) yog ib hom kev sau cov ntaub ntawv hauv kev tshawb fawb zoo.
- Focus pawg.
- Kev soj ntsuam ncaj qha.
Nws txhais li cas los sau cov ntaub ntawv?
Sau cov ntaub ntawv piav qhia txog tus txheej txheem kom tau txais kev paub. Nws yog tsis yog kev paub nws tus kheej. Ntev npaum li qhov tsom yog ntawm tus txheej txheem ntawm kev nce cov ntaub ntawv los yog kawm, Kev sau ntaub ntawv yog lus operative.
Pom zoo:
Dab tsi yog cov ntaub ntawv hloov pauv hauv cov ntaub ntawv khaws cia?
Cov ntaub ntawv hloov pauv yog cov ntaub ntawv uas tau tsim nyob rau hauv daim ntawv thov kev sib ntsib, uas tsis tau khaws cia hauv cov ntaub ntawv tom qab daim ntawv thov raug txiav
Ntev npaum li cas cov ntaub ntawv tuaj yeem khaws cia hauv cov ntaub ntawv warehouse?
10 xyoo Yog li ntawd, cov ntaub ntawv khaws cia hauv lub tsev khaws ntaub ntawv li cas? Cov ntaub ntawv yog feem ntau khaws cia rau hauv ib lub tsev khaws ntaub ntawv los ntawm cov txheej txheem rho tawm, hloov pauv thiab thauj khoom (ETL), qhov twg cov ntaub ntawv tau muab rho tawm los ntawm qhov chaw, hloov mus rau qhov zoo cov ntaub ntawv thiab ces loaded rau hauv ib lub tsev khaws khoom .
Peb tuaj yeem khaws cov ntaub ntawv hauv database li cas?
Hauv ib lub database, cov ntaub ntawv khaws cia rau hauv cov ntxhuav. Qhov no txhais tau hais tias tag nrho cov ntaub ntawv yuav tsum tau muab khaws cia rau hauv tus qauv txheej txheem. Qhov no yog vim li cas cov ntxhuav tau tsim. Cov ntxhuav yog cov khoom yooj yim tshaj plaws (cov qauv) rau cov ntaub ntawv khaws cia uas muaj nyob hauv cov ntaub ntawv
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
Cov ntaub ntawv khaws cia dab tsi tuav cov ntaub ntawv tshaj plaws?
Cov ntaub ntawv khaws cia rau hauv lub hard disk tuaj yeem nkag tau sai dua li cov ntaub ntawv khaws cia rau ntawm lub disk. Hard disks tuaj yeem khaws ntau cov ntaub ntawv ntau dua li lub floppy disk. Ib qho nyuaj hard disk hauv tus kheej lub computer tuaj yeem tuav ob peb gigabytes ntawm cov ntaub ntawv