Qhov Tseem Ceeb Qhov txawv - Realm vs SQLite
Cov ntawv thov niaj hnub xav tau kev ua tau zoo thiab ua haujlwm tau zoo thiab ib qho kev tswj hwm lub teeb pom kev zoo uas ua haujlwm rau lub hom phiaj no yog SQLite. Txawm hais tias SQLite tau siv dav, nws muaj qee qhov kev txwv. SQLite cov lus nug tuaj yeem qeeb, thiab nws yuav nyuaj dua los tswj cov ntaub ntawv loj. Nws kuj yog ib qho nyuaj rau ua code migrations thaum tus naj npawb ntawm cov ntaub ntawv nce. Lub Realm yog lwm txoj hauv kev rau SQLite. Qhov sib txawv tseem ceeb ntawm Realm thiab SQLite yog tias Realm yog ib qho yooj yim-rau-siv qhib qhov khoom-centric database tswj system uas yog siv los hloov SQLite thaum SQLite yog ib qho kev sib raug zoo database tswj system uas tau siv dav.
Lub Ntiaj Teb yog dab tsi?
Lub tebchaws yog qhov chaw khaws ntaub ntawv rau kev txhim kho daim ntawv thov mobile. Nws yog qhov hloov pauv rau SQLite. Nws tau sau hauv C ++. Realm txhawb cov ntaub ntawv hom xws li Boolean, luv, int, ntev, ntab, ob npaug, hlua, Hnub thiab byte. Nws kuj tseem siv cov lus piav qhia. Qee tus ntawm lawv yog @Ignore, @Index, @PrimaryKey.
Lub tebchaws tau nrawm nrawm thiab siv cov khoom khaws cia cov ntaub ntawv. Cov qauv ntaub ntawv Realm zoo ib yam li Java Classes, thiab cov chav kawm yog subclasses ntawm RealmObject. Lub ntsiab kom zoo dua ntawm Realm tshaj SQLite yog tias nws nrawm dua thiab ua tau zoo dua SQLite. Nws yog ib qho yooj yim mus use thiab cross-platform.
SQLite yog dab tsi?
SQLite yog qhov kev sib raug zoo ntawm kev tswj hwm database. Cov ntaub ntawv yog khaws cia rau hauv daim ntawv ntawm lub rooj. Ib lub rooj muaj cov kab thiab kab. Ib kab yog ib daim ntawv. Ib kem yog ib daim teb. Cov ntxhuav muaj feem cuam tshuam rau ib leeg. Cov kab tuaj yeem koom nrog yog tias tsim nyog. SQLite siv cov lus nug thiab cov lus nug tshwm sim yog mapped rau cov khoom. Yog tias tus programmer xav hloov cov ntaub ntawv xws li ntxiv cov kab, schema migrations yuav tsum tau ua. Nws kuj txhawb ntau lub tsev qiv ntawv thib peb. Nws yog portable. Tej zaum nws yuav nyuaj rau kev tswj cov ntaub ntawv nyuaj vim tias nws yuav tsum tau sau Cov Lus Nug Lus Nug.
Daim duab 01: SQLite
SQLite yog lub teeb yuag yog li nws tuaj yeem siv rau cov tshuab kos, IOT (Internet of Things) li tsis yog siv cov kev tswj hwm database xws li MySQL. SQLite zoo dua rau cov ntawv thov uas tsis muaj tsheb ntau. Nws tuaj yeem siv rau cov vev xaib, tab sis yog tias lub vev xaib tau txais ntau qhov kev thov, SQLite yuav tsis yog qhov kev xaiv zoo. Nws kuj tseem tsis tsim nyog rau kev siv cov haujlwm ua ke. Feem ntau, SQLite yog qhov muaj txiaj ntsig zoo rau kev kos software thiab kev txhim kho hauv daim ntawv thov.
Dab tsi yog qhov zoo sib xws ntawm Realm thiab SQLite?
- Ob qho kev tswj hwm cov ntaub ntawv feem ntau yog siv rau kev txhim kho daim ntawv thov mobile.
- Ob leeg yog hla lub platform. (Mac, IOS, Android)
Qhov txawv ntawm Realm thiab SQLite yog dab tsi?
Realm vs SQLite |
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| Lub teb chaws yog ib qho yooj yim siv qhib qhov chaw, khoom-centric database tswj system uas yog siv los hloov SQLite. | SQLite yog qhov kev sib raug zoo ntawm kev tswj hwm database uas txhawb nqa kev sib raug zoo database nta. |
| Lub tebchaws nrawm dua SQLite. | SQLite qeeb dua Realm. |
| SQL | |
| Realm tsis siv SQL. | SQLite siv SQL rau cov ntaub ntawv khaws cia, rov qab thiab tswj xyuas. |
| Yooj yim ntawm kev sib koom ua ke thiab siv | |
| Lub tebchaws tau yooj yim rau kev sib koom ua ke thiab siv dua li SQLite. | SQLite nyuaj siv dua Realm. |
| Cov ntaub ntawv | |
| Realm tsis muaj ntau cov lus qhia thiab cov ntaub ntawv piv rau SQLite. Lub teb chaws tseem tab tom txhim kho. | SQLite muaj ntau cov kev qhia thiab cov ntaub ntawv. |
Summary – Realm vs SQLite
Realm database yog qhov kev xaiv zoo los tsim kho sai thiab yooj yim siv cov kev daws teeb meem rau cov ntawv thov txawb. Qhov txawv ntawm Realm thiab SQLite yog tias Realm yog ib qho yooj yim rau siv qhib qhov chaw, khoom-centric database tswj system uas yog siv los hloov SQLite thiab SQLite yog ib qho kev sib raug zoo database tswj system. Realm thiab SQLite tuaj yeem siv tau raws li qhov yuav tsum tau ua thiab siv yooj yim.
Download PDF Version of Realm vs SQLite
Koj tuaj yeem rub tawm PDF version ntawm kab lus no thiab siv nws rau offline hom phiaj raws li daim ntawv ceeb toom. Thov download PDF version ntawm no Qhov txawv ntawm Realm thiab SQLite
