Cov txheej txheem:
Video: TypeORM siv rau dab tsi?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
TypeORM yog ORM uas tuaj yeem khiav hauv NodeJS, Browser, Cordova, PhoneGap, Ionic, React Native, NativeScript, Expo, thiab Electron platforms thiab tuaj yeem ua tau. siv nrog TypeScript thiab JavaScript (ES5, ES6, ES7, ES8).
Kuj paub, Kuv yuav nruab TypeORM li cas?
Kev teeb tsa
- Nruab npm pob: npm nruab typeorm --save.
- Koj yuav tsum nruab reflect-metadata shim: npm nruab reflect-metadata --save. thiab import nws qhov chaw hauv ntiaj teb no ntawm koj lub app (piv txwv li hauv app.ts): import "reflect-metadata";
- Tej zaum koj yuav xav tau rau nruab node typings: npm nruab @types/node --save.
Qhov thib ob, Sequelize yog dab tsi? Sequelize yog kev cog lus-raws li ORM rau Node. js. Sequelize Nws yog ib qho yooj yim kawm thiab muaj kaum ob ntawm cov yam ntxwv txias xws li synchronization, koom haum, validation, thiab lwm yam. Nws kuj muaj kev txhawb nqa rau PostgreSQL, MySQL, MariaDB, SQLite, thiab MSSQL. Kuv xav tias koj muaj qee hom kev pabcuam SQL database pib ntawm koj lub tshuab.
Ib yam li ntawd, Hom ORM yog dab tsi?
Object-relational mapping ( ORM , O/RM, thiab O/R mapping tool) hauv computer science yog txheej txheem programming los hloov cov ntaub ntawv ntawm qhov tsis sib xws. hom systems siv hom lus-oriented programming. Qhov no tsim, qhov tseeb, ib qho "virtual object database" uas tuaj yeem siv los ntawm cov lus programming.
Kuv yuav siv TypeORM li cas?
Piv txwv li siv TypeORM nrog TypeScript
- clone repository.
- run npm i.
- kho ormconfig.json thiab hloov koj qhov kev teeb tsa database (koj tuaj yeem hloov hom database, tab sis tsis txhob hnov qab txhim kho cov tsav tsheb tshwj xeeb)
- run npm pib.
- lom zem!
Pom zoo:
Dab tsi yog tag nrho cov kab kev sib txuas lus uas xav tau rau kev sib txuas tag nrho rau taw tes network ntawm tsib lub khoos phis tawj rau lub khoos phis tawj?
Tus naj npawb ntawm cov kab sib txuas lus uas yuav tsum tau muaj rau kev sib txuas tag nrho ntawm qhov taw tes rau-taw tes ntawm yim lub khoos phis tawj yog nees nkaum yim. Ib tug tag nrho txuas cuaj lub computer network yuav tsum tau peb caug rau kab. Ib tug tag nrho txuas kaum lub computer network yuav tsum tau plaub caug tsib kab
Cov lus siv tau siv rau dab tsi?
Functional programming languages yog tsim tshwj xeeb los tswj cov cim kev suav thiab sau npe ua cov ntawv thov. Functional programming yog raws li kev ua lej. Qee cov lus nrov ua haujlwm suav nrog: Lisp, Python, Erlang, Haskell, Clojure, thiab lwm yam
Dab tsi yog qhov txiaj ntsig tseem ceeb rau tus neeg siv ntawm kev siv lub tshuab virtual?
Qhov zoo ntawm cov tshuab virtual: Ntau qhov chaw OS tuaj yeem nyob ib txhij ntawm tib lub tshuab, cais ntawm ib leeg; Lub tshuab virtual tuaj yeem muab cov lus qhia teeb tsa uas txawv ntawm lub computer tiag tiag; Ib qho yooj yim txij nkawm, daim ntawv thov muab, muaj thiab yooj yim rov qab
API yog dab tsi thiab nws siv rau dab tsi?
Daim ntawv thov kev pab cuam interface (API) yog cov txheej txheem niaj hnub, cov txheej txheem, thiab cov cuab yeej tsim kho software. Qhov tseeb, API qhia meej tias cov khoom siv software yuav tsum cuam tshuam li cas. Tsis tas li ntawd, APIs yog siv thaum programming graphical user interface (GUI) cov khoom
Dab tsi yog cov khoom siv ncaj qha siv rau?
Ib tug ncaj khoom pronoun yog ib lo lus xws li kuv, nws, peb thiab lawv, uas yog siv los ntawm lub npe los sawv cev rau tus neeg los yog yam khoom uas cuam tshuam ncaj qha los ntawm qhov kev txiav txim qhia los ntawm cov lus qhia