Video: Dab tsi yog qhov txawv ntawm SQL Developer thiab PL SQL Developer?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
Thaum Toad thiab SQL Developer kuj muaj cov yam ntxwv no, nws yog qhov yooj yim thiab tsuas yog ua haujlwm rau cov ntxhuav thiab kev pom, whereas PL / SQL Developer cov sib npaug ua haujlwm rau cov kev sib txawv hauv zos, pob khoom, cov txheej txheem, tsis thiab lwm yam, lub sijhawm loj-txuag.
Hais txog qhov no, qhov txawv ntawm Oracle thiab SQL Developer yog dab tsi?
Oracle SQL Developer yog cov Oracle Database IDE. Ib tug dawb graphical neeg siv interface, Oracle SQL Developer tso cai rau cov neeg siv cov ntaub ntawv thiab cov thawj coj ua lawv cov haujlwm database hauv tsawg dua clicks thiab keystrokes. SQL Developer txhawb nqa Oracle Database 10g, 11g, thiab 12c thiab yuav khiav ntawm txhua qhov kev khiav haujlwm uas txhawb Java.
Tsis tas li ntawd, Toad puas zoo dua SQL Developer? Toad muaj cov qauv zoo dua qub nrog ntau dua 40 tus qauv, qhov twg SQL Developer muaj templates thiab; lawv code piv txwv yog ob qho tib si hauv SQL ntawv Editor Code Template cheeb tsam (tsawg dua tshaj 10 templates thiab ua hauj lwm zoo li Toad Auto Replace) thiab muaj zoo dua code templates nyob rau hauv nws snippets vaj huam sib luag, tab sis dua tsis ntau heev ntawm lawv.
PL SQL Developer yog dab tsi?
PL / SQL Developer tsom rau qhov yooj yim ntawm kev siv, kev cai zoo thiab kev tsim khoom, qhov zoo tseem ceeb thaum lub sij hawm Oracle daim ntawv thov kev loj hlob. PL / SQL Developer yog ib qho Kev Txhim Kho Ib puag ncig rau kev tsim, sim, kev debugging thiab optimizing Oracle PL / SQL ntawv khaws cia cov kev pab cuam xws li pob khoom, ua rau thiab lwm yam.
Oracle developer ua dab tsi?
Lub luag haujlwm ntawm Database Developers An Oracle tus tsim tawm yog lub luag hauj lwm rau kev tsim los yog tswj cov database Cheebtsam ntawm ib daim ntawv thov uas siv cov Oracle technology pawg. Oracle developers yog tsim cov ntawv thov tshiab lossis hloov cov ntawv thov uas twb muaj lawm los khiav hauv ib qho Oracle Database ib puag ncig.
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