Video: Qhov twg database zoo tshaj rau Java?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
Tus txheej txheem txuas database hauv Java yog hu ua JDBC. Rau qhov zoo tshaj plaws ntawm kuv txoj kev paub, feem ntau cov ntaub ntawv siv tau yog MySQL , tab sis kuv tau pom ntau lub apps siv lwm cov databases zoo li, suav nrog Oracle , PostgreSQL , IBM-DB2, MS-SQL ua , Sybase, thiab txawm tias dawb huv Java "Java DB" uas los hauv JDK (aka Apache Derby ).
Khaws qhov no rau hauv kev txiav txim siab, cov ntaub ntawv twg yog siv feem ntau?
Cov feem ntau nrov database nyob rau hauv lub ntiaj teb no isOracle raws li DB - Cav qeb duas. Oracle yog ua raws li MySQL, SQL Server, PostgreSQL, thiab MongoDB hauv qeb duas.
Tsis tas li ntawd, cov lus programming twg yog qhov zoo tshaj plaws rau databases? 9 Cov Lus Tshaj Lij Tshaj Lij Tshaj Lij Tshaj Plaws ntawm 2016
- SQL ntawv. Nws tsis yog qhov xav tsis thoob SQL (pronounced 'sequel') saum cov npe ua haujlwm vim nws tuaj yeem pom nyob deb thiab dav hauv ntau yam khoom qab zib.
- Java. Lub zej zog tech tsis ntev los no ua kev zoo siab rau lub 20th hnub tseem ceeb ntawm Java.
- JavaScript.
- C#
- C++
- Python.
- PHP.
- Ruby on Rails.
Ib yam li ntawd, koj tuaj yeem nug, puas yog Java database?
Java Database Kev sib txuas (JDBC) yog ib qho kev sib txuas lus programming (API) rau cov lus programming Java , uas txhais li cas tus neeg siv yuav nkag tau a database . Nws yog ib feem ntawm Java Standard Editionplatform, los ntawm Oracle Corporation.
Cov ntaub ntawv twg yog siv los ntawm Google?
Bigtable. Bigtable yog ib qho chaw khaws cia (tsim los ntawm Google ) rau kev tswj cov ntaub ntawv uas tau tsim los ntsuas rau qhov loj heev: petabytes ntawm cov ntaub ntawv hla ntau txhiab ntawm cov khoom lag luam. Ntau qhov project ntawm Google khaws cov ntaub ntawv hauv Bigtable, suav nrog web indexing, Google Lub ntiaj teb, thiab Google Nyiaj txiag.
Pom zoo:
Qhov twg sorting algorithm yog qhov zoo tshaj plaws hauv qhov phem tshaj?
Sorting algorithms Algorithm Cov ntaub ntawv qauv Lub Sijhawm complexity: Qhov phem tshaj plaws ceev xaiv Array O(n2) Sib sau ua ke Array O(n log(n)) Heap txheeb Array O(n log(n)) Smooth txheeb Array O(n log(n))
Qhov twg yog qhov zoo tshaj plaws Smartband nyob rau hauv 3000?
7 Sab saum toj Fitness Band Hauv qab 3000: Qhia rau Cov Nta Zoo Tshaj Plaws thiab Nqe HONOR Band 5. Fastrack Reflex 2.0 Fitness Tracker. taug qab ntawm koj cov kev ua ub no nrog lub cev qoj tracker los ntawm Fastrack. Suab nrov Colorfit Fitness Band. Mi Band 3. Mi Smart Band 4. HolyHigh YG3 Plus Fitness Tracker. OMNiX™ ID115 Plus HR Smart Wristband
Qhov twg yog qhov zoo tshaj plaws app xauv rau iPhone?
3 zoo tshaj app lockers rau iOS pab kiag li lawm: AppLocker: Nws muab ib tug zoo meej tov rau cov neeg uas xav kaw lawv iOS no apps. BioLockdown: Nws yog lwm qhov kev xaiv zoo tshaj plaws rau lockapps ntawm koj li iOS no. iProtect: Nws yog lwm daim ntawv thov uas muaj cov txiaj ntsig zoo rau kev ruaj ntseg iOS apps
Qhov twg IDE yog qhov zoo tshaj plaws rau kev txhim kho lub vev xaib?
11 Qhov zoo tshaj plaws IDEs rau Web Development PhpStorm. PhpStorm yog qhov chaw kaw-qhov chaw hla-platformIntegrated Development Ib puag ncig tshwj xeeb tshaj yog tsim forcoding hauv PHP, HTML thiab JavaScript. Visual Studio Code. Sublime Text. Atom. WebStorm. Brackets. Vim. Komodo
Qhov kev pabcuam AWS qhov twg yog qhov zoo tshaj plaws rau cov ntaub ntawv thaub qab rau lub sijhawm ntev?
Amazon S3 Glacier yog qhov ruaj ntseg, ruaj khov, thiab tsis tshua muaj nqi huab cia kev pabcuam rau kev khaws cov ntaub ntawv thiab thaub qab mus ntev. Cov neeg siv khoom tuaj yeem ntseeg tau khaws cov ntaub ntawv loj lossis me me rau tsawg li $ 0.004 ib gigabyte ib hlis, ib qho kev txuag tseem ceeb piv rau cov kev daws teeb meem hauv tsev