Video: Yam ntaub ntawv twg koj yuav siv uas yog lub sijhawm paub?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
Hnub tim cov ntaub ntawv hom yog HNUB, TIMESTAMP, TIMESTAMP nrog TIME ZONE , thiab TIMESTAMP nrog rau hauv zos TIME ZONE . Cov nqi ntawm hnub tim cov ntaub ntawv hom yog qee zaum hu ua datetimes.
Cov lus nug tseem yog, lub sijhawm twg SQL Server siv?
Rau ib leeg thiab koom ua ke SQL ntawv Cov ntaub ntawv lub sij hawm zone ib txwm teem rau UTC thiab CURRENT_TIMEZONE rov qab lub npe ntawm UTC thaj tsam.
Tsis tas li ntawd, Oracle Database timezone yog dab tsi? DBTIMEZONE muaj nuj nqi rov qab ib txoj hlua cim uas sawv cev rau a thaj tsam offset format [+|-]TZH:TZM e.g., -05:00 or a thaj tsam lub npe cheeb tsam xws li Europe/London. Tus nqi ntawm cov database timezone nyob ntawm seb koj qhia nws li cas hauv CREATE tsis ntev los no DATABASE los yog ALTER DATABASE nqe lus.
Thib ob, timestamp nrog timezone yog dab tsi?
Cov daim ntawv teev sijhawm hom ntaub ntawv tso cai rau koj khaws ob hnub thiab sijhawm. Txawm li cas los xij, nws tsis muaj thaj tsam cov ntaub ntawv. Nws txhais tau tias thaum koj hloov koj lub database server's thaj tsam , cov daim ntawv teev sijhawm tus nqi khaws cia hauv database tsis hloov. Cov ntaub ntawv timestamptz yog cov timestamp nrog lub sijhawm.
Hnub tim / lub sij hawm offset yog dab tsi?
Tus qauv DateTimeOffset sawv cev rau hnub thiab sijhawm tus nqi, nrog rau qhov offset uas qhia tias tus nqi sib txawv li cas UTC . Yog li, tus nqi ib txwm unambiguously txheeb xyuas ib qho taw tes hauv lub sijhawm.
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
Lub rooj twg muaj cov ntaub ntawv ntau yam hauv cov ntaub ntawv warehouse?
Cov ntaub ntawv tseeb muaj ntau cov ntaub ntawv nyob rau hauv cov ntaub ntawv warehouse. Multidimensional database yog siv los txhim kho 'online analytical processing' (OLAP) thiab cov ntaub ntawv warehouse
Yuav ua li cas koj paub yog tias koj DVD neeg uas ua ntawv tsis zoo?
Ntxig ib tug huv si, khawb-dawb disc rau hauv lub DVD player saib yuav ua li cas tshwm sim. Qee lub sij hawm zoo li lub lens faulty tiag tiag yog khawb, qias neeg DVD uas lub lens nyeem tsis tau lawm. Yog hais tias ib tug huv los yog tshiab DVD tsis ua si nyob rau hauv lub DVD neeg uas ua ntawv, nws yog obviously ib tug neeg uas ua ntawv teeb meem
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
Dab tsi VM Series koj yuav tsum xav txog yog tias koj xav tau cov ntawv thov host uas xav tau kev ua haujlwm siab IO rau cov ntaub ntawv tsis tu ncua?
Teb: VM series uas koj yuav tsum yog xav txog yog tias koj xav tau txais cov ntawv thov uas xav tau kev ua haujlwm siab rau cov ntaub ntawv tsis tu ncua yog VMware workstation, Oracle VM virtual box lossis Microsoft Azure suav. Cov khoom siv no muaj qhov yooj yim tshaj plaws ntawm kev ua haujlwm hosting