BLOB CLOB Oracle yog dab tsi?
BLOB CLOB Oracle yog dab tsi?

Video: BLOB CLOB Oracle yog dab tsi?

Video: BLOB CLOB Oracle yog dab tsi?
Video: Mapping BLOBs & CLOBs with JPA and Hibernate 2024, Kaum ib hlis
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Raws li Oracle Docs, lawv tau nthuav tawm raws li hauv qab no: BLOB : Qhov sib txawv-ntev binary cov khoom loj hlua uas tuaj yeem ncav cuag 2GB (2, 147, 483, 647) ntev. A CLOB tuaj yeem khaws cov kab cim ib-byte lossis multibyte, cov ntaub ntawv ua cim. A CLOB suav hais tias yog ib txoj hlua cim.

Ib yam li ntawd, nws tau nug, CLOB Oracle yog dab tsi?

CLOB . Stands rau "Character Large Object." A CLOB yog hom ntaub ntawv siv los ntawm ntau yam kev tswj hwm database, suav nrog Oracle thiab DB2. Nws khaws cov ntaub ntawv loj ntawm cov cim, txog li 4 GB loj. Txij li thaum CLOB cov ntaub ntawv yuav loj heev, qee qhov kev tswj hwm database tsis khaws cov ntawv ncaj qha rau hauv lub rooj.

Tom qab ntawd, lo lus nug yog, kev siv BLOB CLOB datatypes hauv JDBC yog dab tsi? InterSystems SQL txhawb nqa lub peev xwm khaws cia BLOBs (Binary Large Objects) thiab CLOBs (Cim Cov Khoom Loj) hauv cov ntaub ntawv raws li cov khoom ntws. BLOBs yog siv khaws cov ntaub ntawv binary, xws li cov duab, thaum CLOBs yog siv khaws cov ntaub ntawv cim.

Kuj tseem paub, Oracle BLOB yog dab tsi?

A BLOB (Binary Loj Object) yog ib qho Oracle hom ntaub ntawv uas tuaj yeem tuav txog 4 GB ntawm cov ntaub ntawv. BLOB's yog ke rau khaws cov ntaub ntawv digitized (piv txwv li, duab, suab, video).

Tus nqi blob yog dab tsi?

A BLOB yog ib yam khoom loj binary uas tuaj yeem tuav cov ntaub ntawv sib txawv. BLOB values raug kho raws li binary hlua (byte strings). Lawv muaj cov cim binary teeb thiab collation, thiab kev sib piv thiab sorting yog nyob ntawm tus lej tus nqi ntawm cov bytes hauv kab tus nqi.

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