Video: Cov ntaub ntawv khaws cia dab tsi tuav cov ntaub ntawv tshaj plaws?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
Cov ntaub ntawv khaws cia ntawm lub hard disk tuaj yeem nkag tau sai dua cov ntaub ntawv khaws cia nyob rau hauv ib tug floppy disk. Hard disks tuaj yeem khaws ntau yam ntxiv cov ntaub ntawv tshaj ib tug floppy disk. Ib tug raug hard disk nyob rau hauv tus kheej lub computer ua tau tuav ob peb gigabytes ntawm cov ntaub ntawv.
Hauv qhov no, cov khoom siv kho qhov muag twg tuaj yeem tuav cov ntaub ntawv tshaj plaws?
Ib leeg CDs (compact discs ) tuaj yeem tuav ib ncig ntawm 700 MB (megabytes) thiab optical jukeboxes tuaj yeem tuav ntau dua. Ib txheej DVDs tuaj yeem tuav 4.7 GB, thaum ob txheej txheej tuaj yeem tuav 8.5 GB.
Tom qab ntawd, lo lus nug yog, lub cuab yeej khaws cia twg tuav cov ntaub ntawv tsawg kawg nkaus? Memory cards, tshwj xeeb tshaj yog micro SD card, yog cov cov khoom siv cia tsawg tshaj plaws muaj.
Ib yam li ntawd, koj tuaj yeem nug, lub cuab yeej cia khoom twg muaj peev xwm tshaj plaws?
Samsung tshaj tawm 16TB SSD, 'World's Loj tshaj plaws ' Cov cuab yeej cia rau Data Centers. Samsung muaj tshaj tawm ib tug tshiab solid-state tsav powered los ntawm nws cov tshiab 3D ntsug-NAND flash nco chips, uas nws hais yog lub ntiaj teb no muaj peev xwm tshaj plaws lub computer khoom cia.
Dab tsi yog qhov tsis zoo ntawm optical cia?
Qhov loj tshaj qhov tsis zoo ntawm optical cia yog disk muaj peev xwm. Tam sim no topping tawm ntawm 27 GB rau 12-centimeter Blu-duab tshav Disc, nyem khaws cia nws muaj peev xwm tuav tes ntawm ib-centimeter hauv paus. Thaum Sony tab tom tsim 3.3 TB Blu-duab tshav Disc, IT cov thawj coj tam sim no tuaj yeem yuav cov lag luam-qib 10 TB HDD.
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
Dab tsi yog qhov zoo tshaj plaws hauv kev khaws cov ntaub ntawv?
Sab saum toj-Down Approach Cov ntaub ntawv warehouse tuav cov ntaub ntawv atomic lossis cov ntaub ntawv pauv uas tau muab rho tawm los ntawm ib lossis ntau lub hauv paus thiab kev koom ua ke hauv ib qho qauv, cov ntaub ntawv lag luam. Los ntawm qhov ntawd, cov ntaub ntawv tau sau tseg, qhov loj me, thiab muab faib rau ib lossis ntau dua "nyob" cov ntaub ntawv marts
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 .
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
Kev khaws cia thiab khaws cov ntaub ntawv yog dab tsi?
Cov ntaub ntawv khaws cia thiab khaws cia, cov txheej txheem ntawm kev sau thiab khaws cov ntaub ntawv kom lawv tuaj yeem nyob thiab tso tawm kom pom ntawm kev thov. Document-retrievalsystems khaws tag nrho cov ntaub ntawv, uas feem ntau yog muab los ntawm lub npe lossis los ntawm cov lus tseem ceeb cuam tshuam nrog cov ntaub ntawv