Video: Cov ntaub ntawv twg yog siv dav?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
Cov ntaub ntawv nrov tshaj plaws hauv ntiaj teb yog Oracle raws li DB-Engine qeb duas. Oracle yog ua raws li MySQL , SQL Server , PostgreSQL, thiab MongoDB hauv qeb duas.
Ib yam li ntawd, tib neeg nug, dab tsi yog qhov nrov tshaj plaws SQL database?
Cov ntaub ntawv nrov tshaj plaws yog MySQL , thiab tsis deb los ntawm SQL Server. Qhov no tsis yog qhov xav tsis thoob, vim tias lawv yog ob lub databases saum toj kawg nkaus xyoo tas los thiab. Xyoo no, ntau tshaj li ib nrab ntawm cov neeg teb (58.7%) tau siv MySQL.
Ib sab saum toj no, qhov twg database ceev tshaj? MemSQL 6.5 cements lub tuam txhab txoj haujlwm ua lub ntiaj teb ceev tshaj plaws SQL ntawv database los ntawm kev nce qib kev ua tau zoo thiab ntxiv cov peev txheej kom nrawm lub sijhawm rau kev pom thiab ua kom yooj yim rau kev ua haujlwm.
Ntawm no, dab tsi yog qhov feem ntau siv database software?
Oracle database yog cov feem ntau siv dav khoom-relational database kev tswj hwm software . Qhov tseeb version ntawm cov cuab yeej no yog 12c qhov twg c txhais tau tias huab xam.
Puas yog SQL tseem xav tau?
SQL ntawv yog nyob rau hauv xav tau Rau cov ntaub ntawv analysts, SQL ntawv yog hais nyob rau hauv feem ntau ntawm kev tshaj tawm, tshaj peb zaug ntau npaum li Python thiab R. Zaj dab neeg luv luv: yog, koj yuav tsum kawm SQL ntawv . Nws yuav tsis tsuas yog ua rau koj tsim nyog rau cov hauj lwm no, nws yuav ua rau koj sib nrug los ntawm lwm tus neeg sib tw uas tau tsom mus rau cov khoom "sexy" xwb.
Pom zoo:
Tus qauv twg yog siv los hloov cov ntaub ntawv kho mob thiab kev tswj hwm ntawm ntau lub tsev kho mob cov ntaub ntawv xov xwm HIS)?
Kev Noj Qab Haus Huv Qib Xya lossis HL7 yog hais txog cov txheej txheem thoob ntiaj teb rau kev hloov pauv cov ntaub ntawv kho mob thiab kev tswj hwm ntawm cov ntawv thov software siv los ntawm ntau tus kws kho mob. Cov qauv no tsom rau cov txheej txheem thov, uas yog 'txheej 7' hauv OSI qauv
Dab tsi yog tus lej ncaj qha uas yuav tsum raug tshem tawm ntawm cov ntaub ntawv tshawb fawb kom ua raws li kev siv cov ntaub ntawv txwv?
Cov ntaub ntawv qhia ncaj qha hauv qab no yuav tsum raug tshem tawm rau PHI kom tsim nyog raws li cov ntaub ntawv txwv: (1) Cov npe; (2) Cov ntaub ntawv chaw nyob xa ntawv, tsis yog lub nroog lossis nroog, xeev, thiab ZIP code; (3) xov tooj; (4) fax xov tooj; (5) email chaw nyob; (6) social security naj npawb; (7) cov ntaub ntawv kho mob; (8) kev npaj kho mob
Cov ntaub ntawv dav dav yog dab tsi?
Txhua cov ntaub ntawv qauv yog lub thawv uas tuav ib hom ntaub ntawv tshwj xeeb. Cov ntaub ntawv dav dav yog qhov tseem ceeb hauv kev tsim cov tsev qiv ntawv uas ua haujlwm nrog "ib yam" cov ntaub ntawv. Ib qho dynamic binding ntawm cov ntaub ntawv hom thiab cov ntaub ntawv qauv tshwm sim thaum lub sij hawm khiav
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 ntaub ntawv kos npe lossis cov ntaub ntawv headers raws li siv hauv digital forensics?
Hom Cov Ntaub Ntawv Ib daim ntawv kos npe yog ib qho tshwj xeeb ntawm kev txheeb xyuas bytes sau rau hauv cov ntaub ntawv header. Ntawm lub Windows system, cov ntaub ntawv kos npe ib txwm muaj nyob hauv thawj 20 bytes ntawm cov ntaub ntawv. Cov ntaub ntawv sib txawv muaj cov ntaub ntawv sib txawv; Piv txwv li, Windows Bitmap duab file (