Video: Postgres database khaws cia nyob qhov twg?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
Kev lig kev cai, kev teeb tsa thiab cov ntaub ntawv siv los ntawm a database pawg yog khaws cia ua ke hauv pawg cov ntaub ntawv teev npe, feem ntau hu ua PGDATA (tom qab lub npe ntawm ib puag ncig hloov pauv uas tuaj yeem siv los txhais nws). Ib qho qhov chaw rau PGDATA yog /var/lib/ pgsql ua /cov ntaub ntawv.
Ib sab ntawm no, Postgres databases khaws cia Mac nyob qhov twg?
Qhov System: MAC OS X 10.9. 9.4) qhov no yog nyob rau hauv dir hu ua /Library/ PostgreSQL Yog tias koj mus qhov ntawd, qhib lub nplaub tshev npe hu ua ver. ntawm koj lub PG thiab tom qab ntawd mus rau lub nplaub tshev cov ntaub ntawv koj yuav nrhiav tau koj DB.
Tom qab ntawd, lo lus nug yog, qhov twg cov ntaub ntawv khaws cia rau hauv lub database? Hauv ib database , cov ntaub ntawv yog khaws cia rau hauv rooj. Qhov no yog vim li cas cov ntxhuav tau tsim. Cov ntxhuav yog cov khoom yooj yim tshaj plaws (cov qauv) rau cov ntaub ntawv ruaj khov uas muaj nyob hauv a database . Piv txwv li, daim duab saum toj no yog ib qho screenshot ntawm lub rooj uas muaj khaws cia cov ntaub ntawv dav dav txog qee lub tsheb.
Hauv qhov no, PostgreSQL databases khaws Ubuntu nyob qhov twg?
PostgreSQL configuration files yog khaws cia hauv /etc/ postgresql //main directory. Piv txwv li, yog tias koj nruab PostgreSQL 9.5, cov ntaub ntawv teeb tsa yog khaws cia hauv /etc/ postgresql /9.5/main directory.
Postgres khaws cov ntaub ntawv li cas?
PostgreSQL muab ob txoj kev sib txawv rau khw binary cov ntaub ntawv . Binary cov ntaub ntawv tuaj yeem yog khaws cia nyob rau hauv ib lub rooj siv lub cov ntaub ntawv ntaus bytea lossis los ntawm kev siv Cov Khoom Loj Loj uas khw lub binary cov ntaub ntawv nyob rau hauv ib lub rooj sib cais nyob rau hauv ib tug tshwj xeeb hom ntawv thiab hais txog lub rooj los ntawm khaws cia tus nqi ntawm hom oid hauv koj lub rooj.
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Postgres databases khaws cia nyob qhov twg?
Ntawm Windows7 tag nrho cov databases raug xa mus los ntawm tus lej hauv cov ntaub ntawv npe pg_database hauv qab C: Program Files (x86)PostgreSQL8.2dataglobal. Tom qab ntawd koj yuav tsum tshawb rau lub npe nplaub tshev los ntawm tus lej ntawd hauv C: Cov Ntaub Ntawv Cov Ntaub Ntawv (x86)PostgreSQL8.2dataase. Qhov ntawd yog cov ntsiab lus ntawm lub database
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