Cov txheej txheem:

Dab tsi yog hom ntaub ntawv nyuaj hauv DBMS?
Dab tsi yog hom ntaub ntawv nyuaj hauv DBMS?

Video: Dab tsi yog hom ntaub ntawv nyuaj hauv DBMS?

Video: Dab tsi yog hom ntaub ntawv nyuaj hauv DBMS?
Video: Leng Yang - Yog Vim Dab Tsi (Official Full Song | Nkauj Tawm Tshiab) 2020/05/24 2024, Kaum ib hlis
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hom ntaub ntawv complex - Computer txhais

Ib qho cov ntaub ntawv uas tsis poob rau hauv cov qauv teb (alpha, numeric, dates) ntawm kev sib raug zoo DBMS . Piv txwv ntawm hom ntaub ntawv complex yog cov nqi ntawm cov ntaub ntawv, cov ntaub ntawv ua cov lus, daim ntawv qhia, lub sij hawm-series, cov duab thiab video.

Ib yam li ntawd, koj tuaj yeem nug, dab tsi yog cov ntaub ntawv nyuaj?

Cov ntaub ntawv nyuaj analytics hais txog kev siv cov txheej txheem algorithmic siab heev los ua cov txheej txheem loj cov ntaub ntawv teev ua tau zoo. Peb hu qhov no cov ntaub ntawv analytics, uas yog siv computers los soj ntsuam cov ntaub ntawv thiab nrhiav cov qauv muaj txiaj ntsig hauv nws uas tuaj yeem siv los txiav txim siab.

Tsis tas li ntawd, hom ntaub ntawv nyuaj hauv Java yog dab tsi? Siv a hom ntaub ntawv complex as a java ua khoom. Pab neeg ua haujlwm. A cov ntaub ntawv nyuaj object yog a hom ntaub ntawv uas tau raug txhais nyob rau hauv Bonita Studio thiab exported raws li ib tug. jar lub. xsd pob mus rau qhov chaw ua haujlwm. Nws tuaj yeem raug xa rov qab rau hauv Bonita Studio rau cov txheej txheem lossis ua haujlwm.

Kuj paub, dab tsi yog qhov khoom siv hauv database?

Cov khoom nyuaj . Qhov yooj yim tshaj plaws khoom yog khoom xws li integers, cim, byte hlua ntawm txhua qhov ntev, booleans thiab ntab (ib qho yuav ntxiv lwm hom atomic). Muaj ntau yam complex khoom constructors: tuples, poob lawm, hnab, npe, thiab arrays yog piv txwv.

Dab tsi yog hom ntaub ntawv hauv SQL?

SQL cov ntaub ntawv hom tuaj yeem muab faib ua ntau pawg hauv qab no

  • Cov ntaub ntawv naj npawb xws li int, tinyint, bigint, ntab, tiag thiab lwm yam.
  • Hnub thiab Lub Sijhawm cov ntaub ntawv xws li Hnub, Lub Sijhawm, Hnub Nyoog thiab lwm yam.
  • Cim thiab hlua cov ntaub ntawv hom xws li char, varchar, ntawv nyeem thiab lwm yam.

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