Cov txheej txheem:
Video: Dab tsi yog cov ntaub ntawv realm?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
A thaj av yog txoj cai tswjfwm kev ruaj ntseg sau tseg rau lub vev xaib lossis daim ntawv thov server. Hauv file realm , lub server khaws cov neeg siv cov ntaub ntawv pov thawj hauv zos hauv a ntaub ntawv npe keyfile. Koj tuaj yeem siv Administration Console los tswj cov neeg siv hauv file realm.
Yog li ntawd, lub ntiaj teb siv rau dab tsi?
Realm yog qhov qhib qhov khoom siv kev tswj hwm qhov system, pib rau lub xov tooj ntawm tes (Android / iOS), kuj muaj rau cov platforms xws li Xamarin lossis React Native, thiab lwm yam, suav nrog cov ntawv thov desktop (Windows), thiab muaj ntawv tso cai raws li Apache License.
Tsis tas li ntawd, hom database yog dab tsi? NoSQL database
Tom qab ntawd, kuv yuav qhib cov ntaub ntawv realm li cas?
Qhib Realm Database Khaws rau hauv Ntaus siv Android Studio
- Tom qab qhib lub Android Studio qhov peb xav tau yog mus nrhiav Cov Ntaub Ntawv Explorer uas koj tuaj yeem pom hauv qab sab xis ntawm Android Studio.
- Koj yuav pom lub qhov rais yuav qhib thiab tam sim no xaiv lub cuab yeej los ntawm sab saum toj thiab nthuav cov ntaub ntawv xaiv.
Dab tsi yog iOS realm database?
Realm yog ib tug cross platform mobile database rau iOS no (muaj nyob hauv Swift & Lub Hom Phiaj-C ) thiab Android. Realm yog tsim kom zoo dua thiab sai dua SQLite thiab Core Data. Realm yog tsim los kom yooj yim rau siv raws li nws tsis yog ORM thiab nws siv nws tus kheej persistence engine los muab koj cov kev ua tau zoo thiab ceev.
Pom zoo:
Cov ntaub ntawv hom thiab cov qauv ntaub ntawv yog dab tsi?
Cov qauv ntaub ntawv yog ib txoj hauv kev piav qhia txog ib txoj hauv kev los npaj cov ntaub ntawv kom ua haujlwm andalogrithms tuaj yeem siv tau yooj yim dua. Ib hom ntaub ntawv piav qhia txog cov ntaub ntawv uas txhua tus sib koom ua ke. Piv txwv li tus lej cov ntaub ntawv hom piav qhia txhua tus lej uas lub khoos phis tawj tuaj yeem ua tau
Dab tsi yog qhov txawv ntawm XML cov ntaub ntawv thiab cov ntaub ntawv sib txheeb?
Qhov sib txawv loj ntawm XML cov ntaub ntawv thiab cov ntaub ntawv sib txheeb Ib daim ntawv XML muaj cov ntaub ntawv hais txog kev sib raug zoo ntawm cov ntaub ntawv rau ib leeg nyob rau hauv daim ntawv ntawm hierarchy. Nrog rau tus qauv kev sib raug zoo, tib hom kev sib raug zoo uas tuaj yeem txhais tau yog cov lus niam txiv thiab cov rooj sib raug zoo
Dab tsi yog qhov sib txawv ntawm pab pawg cov ntaub ntawv thiab cov ntaub ntawv tsis yog pawg?
Ob leeg yog cov ntaub ntawv muaj txiaj ntsig ntawm cov ntaub ntawv tab sis qhov sib txawv ntawm lawv yog cov ntaub ntawv tsis muaj ntaub ntawv yog rawdata. Qhov no txhais tau hais tias nws nyuam qhuav tau sau tab sis tsis txheeb rau hauv ib pawg lossis cov chav kawm. Ntawm qhov tod tes, groupeddata yog cov ntaub ntawv uas tau teeb tsa ua pawg los ntawm cov ntaub ntawv nyoos
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
Dab tsi yog cov teeb meem ntawm kev tswj cov ntaub ntawv hauv cov ntaub ntawv ib txwm muaj?
Nyob rau tib lub sijhawm, qhov kev tswj hwm cov ntaub ntawv ib puag ncig tsim teeb meem xws li cov ntaub ntawv rov ua dua thiab tsis sib xws, cov kev pab cuam-cov ntaub ntawv dependence, inflexibility, tsis muaj kev ruaj ntseg, thiab tsis muaj cov ntaub ntawv sib qhia thiab muaj