Cov txheej txheem:
Video: Lub cim xeeb npaum li cas siv SQLite?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
Kev siv nco
Los ntawm lub neej ntawd, peb SQLite wrapper siv max ntawm 2MB nco cache rau kev sib txuas.
Ntxiv mus, yog SQLite hauv nco?
Ib SQLite database yog ib txwm khaws cia rau hauv ib qho yooj yim disk ntaub ntawv. Txawm li cas los xij, hauv qee qhov xwm txheej, cov ntaub ntawv khaws cia yuav khaws cia rau hauv nco . Txhua: nco : database yog txawv los ntawm txhua lwm yam. Yog li, qhib ob qhov kev sib txuas database txhua tus nrog filename ": nco :" yuav tsim ob qho kev ywj pheej hauv- nco databases.
Tom qab, lo lus nug yog, puas yog SQLite zoo txaus? 3 Teb. Nws yog ib txoj hauv kev zoo los pib thiab nws tuaj yeem ua haujlwm txawm tias nyob hauv ib puag ncig me me, tab sis nws yuav tsis ntsuas ntau. zoo nyob rau hauv ib puag ncig nyeem / sau. Cov zoo xov xwm yog tias hloov mus rau tag nrho RDBMS zoo li MySQL lossis Postgres feem ntau yog qhov yooj yim heev. Zoo txaus rau dab tsi.
Tib neeg kuj nug, ntau npaum li cas cov ntaub ntawv tuaj yeem SQLite tuav?
SQLite cov ntaub ntawv database muaj qhov loj tshaj plaws ntawm 140 TB. Hauv xov tooj, qhov loj ntawm qhov chaw cia (ob peb GB) yuav txwv koj cov ntaub ntawv database loj, thaum lub cim xeeb loj yuav txwv li cas ntau cov ntaub ntawv koj ua tau retrieve los ntawm cov lus nug. Tsis tas li ntawd, Android cursors muaj qhov txwv ntawm 1 MB rau cov txiaj ntsig.
Muaj pes tsawg ntsiav tshuaj SQLite ua tau?
Tus naj npawb ntawm Cov Lus Tshaj Tawm Hauv Ib Koom Nrog SQLite tsis txhawb kev koom nrog ntau dua 64 tab . Qhov kev txwv no tshwm sim los ntawm qhov tseeb tias SQLite code generator siv bitmaps nrog ib me ntsis ntawm kev koom- rooj hauv cov lus nug optimizer.
Pom zoo:
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