Video: Dab tsi yog qhov txawv ntawm phpMyAdmin thiab MySQL?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
4 Teb. MySql yog server qhov twg koj commandsget raug tua thiab xa rov qab koj cov ntaub ntawv, Nws tswj txhua yam txog cov ntaub ntawv thaum PhpMyAdmin yog ib daim ntawv thov web, nrog cov neeg siv tus phooj ywg, yooj yim touse GUI ua rau nws yooj yim los tswj cov ntaub ntawv, uas nyuaj rau siv cov kab hais kom ua.
Ntawm no, MySQL thiab phpMyAdmin yog dab tsi?
phpMyAdmin yog ib daim ntawv thov nrov tshaj plaws rau MySQL kev tswj database. Nws yog freetool sau hauv PHP. Los ntawm cov software no koj tuaj yeem tsim, hloov, poob, rho tawm, ntshuam thiab xa tawm MySQL databasetables.
Dab tsi yog qhov txawv ntawm MySQL thiab mysql server? Cov mysql server yog siv los txuas ntxiv cov ntaub ntawv thiab muab cov lus nug cuam tshuam rau nws (SQL). Cov mysql clientspurpose yog tso cai rau koj siv cov lus nug interface. MySqlServer : Cov mysql - server pob tso cai rau khiav a MySQL server uas tuaj yeem tuav ntau lub databases thiab cov txheej txheem ntawm cov databases.
Cov lus nug tseem yog, puas yog phpMyAdmin tuaj nrog MySQL?
PHPMyAdmin yog qhib qhov chaw dawb software, tsim los tswj kev tswj hwm thiab tswj ntawm MySQL databases los ntawm graphic user interface. Sau hauv PHP, PHPMyAdmin tau dhau los ua ib lub vev xaib nrov tshaj plaws MySQL cov cuab yeej tswj. Tsis tas li ntawd, PHPMyAdmin enables koj tswj MySQL cov neeg siv thiab cov cai ntawm cov neeg siv.
MySQL database server yog dab tsi?
MySQL yog Oracle-rov qab qhib qhov kev sib raug zoo database tswj qhov system (RDBMS) raws li Structured QueryLanguage (SQL). Txawm hais tias nws tuaj yeem siv rau ntau yam kev siv, MySQL feem ntau yog txuam nrog webapplications thiab kev tshaj tawm online.
Pom zoo:
Dab tsi yog qhov txawv ntawm qhov sib txawv hauv zos thiab thoob ntiaj teb hauv SQL Server?
Qhov sib txawv hauv zos tau tshaj tawm hauv ib qho kev ua haujlwm whereas Ntiaj teb hloov pauv tau tshaj tawm sab nraum lub luag haujlwm. Cov kev hloov hauv zos tau tsim thaum lub luag haujlwm tau pib ua tiav thiab ploj thaum lub luag haujlwm xaus, ntawm qhov tod tes, Ntiaj teb hloov pauv yog tsim raws li kev tua pib thiab ploj thaum qhov kev pab cuam xaus
Dab tsi yog qhov sib txawv ntawm lub thawv thiab lub thawv ntawv thiab lub thawv ntawv yog dab tsi?
Ib lub thawv thiab cov ntawv nplawm (qee zaum hu ua boxplot) yog ib daim duab uas nthuav tawm cov ntaub ntawv los ntawm tsib lub ntsiab lus. Nyob rau hauv ib lub thawv thiab whisker zajlus: qhov kawg ntawm lub thawv yog lub sab sauv thiab sab quartiles, yog li lub thawv spans lub interquartile ntau yam. qhov nruab nrab yog cim los ntawm ib txoj kab ntsug hauv lub thawv
Dab tsi yog qhov txawv ntawm cov ntaub ntawv hom thiab qhov sib txawv?
Ib qho kev sib txawv yuav tsum muaj cov ntaub ntawv sib txuas nrog nws, piv txwv li nws tuaj yeem muaj cov ntaub ntawv xws li cov lej, lej lej, cov cim thiab lwm yam. Qhov sib txawv ntawm hom Integer khaws cov lej suav thiab tus cim typevariable khaws cov cim tus nqi. Thawj qhov sib txawv ntawm ntau hom ntaub ntawv yog lawv qhov loj me me
Dab tsi yog qhov zoo sib xws thiab qhov txawv ntawm relays thiab PLC yog dab tsi?
Relays yog electro-mechanical keyboards uas muaj coil thiab ob hom kev sib cuag uas tsis yog NO & NC. Tab sis Programmable Logic Controller, PLC yog lub khoos phis tawj me uas tuaj yeem txiav txim siab raws li qhov kev zov me nyuam thiab nws cov tswv yim & tso tawm
Dab tsi yog qhov sib txawv ntawm qhov ntsuas qhov ntsuas thiab qhov ntsuas thib ob?
Primary index: nyob rau hauv ib tug sequentially order file, qhov Performance index uas nws search key qhia cov sequential order ntawm cov ntaub ntawv. Kuj hu ua clustering index. Secondary index: ib qho Performance index uas nws qhov tseem ceeb tshawb nrhiav qhia qhov kev txiav txim sib txawv ntawm qhov kev txiav txim ntawm cov ntaub ntawv. Kuj hu ua non-clustering index