Tsis zoo li qhov pom zoo ib yam, uas tsis siv qhov chaw cia lossis muaj cov ntaub ntawv, qhov pom pom muaj cov kab uas tshwm sim los ntawm cov lus nug tawm tsam ib lossis ntau lub hauv paus rooj lossis kev pom. Kev pom cov ntaub ntawv tuaj yeem khaws cia nyob rau hauv tib lub database raws li nws lub hauv paus ntxhuav los yog nyob rau hauv ib tug txawv database
Puas puas pom cov ntaub ntawv khaws cia?
Kev pom cov khoom siv yog cov ntaub ntawv ua ntej xam tau los ntawm cov lus nug tshwj xeeb (qhov SELECT hauv kev pom txhais) thiab khaws cia rau tom qab sivVim tias cov ntaub ntawv tau suav ua ntej, querying a materialized view is sai dua executing ib query tiv thaiv lub hauv paus rooj ntawm saib.
Cov ntaub ntawv pom lub rooj khaws cia nyob qhov twg?
A materialized view log is located in the master database in the same schema as the master table. Ib lub rooj tswv yim tuaj yeem tsuas muaj ib daim ntawv teev cov ntaub ntawv teev tseg ntawm nws.
Puas yog pom lub rooj?
Ib qhov pom tseeb yog cov khoom siv database uas muaj cov txiaj ntsig ntawm cov lus nugNTAWM cov lus nug ntawm cov lus nug tuaj yeem sau npe cov lus, views, thiab lwm yam kev xav pom. Sib sau ua ke cov khoom no hu ua master tables (lub sij hawm replication) los yog cov lus nthuav dav (cov ntaub ntawv warehousing term).
Dab tsi yog qhov pom tseeb vs qhov pom ib txwm?
Views feem ntau yog siv thaum cov ntaub ntawv yuav tsum nkag mus tsis tu ncua thiab cov ntaub ntawv hauv cov lus tau hloov kho tas li. Ntawm qhov tod tes, Materialized Views yog siv thaum cov ntaub ntawv yuav tsum tau nkag mus ntau zaus thiab cov ntaub ntawv hauv cov lus tsis tau hloov kho tas li.
