Indlela Yokuvula, Hlela, & Ukuguqula Iifayile zeDDL
Ifayile enefayile yeDDL isandiso yiFayili yeLwimi yoLwazi lweNkcazelo yeSQL. Ezi zifayile zecatshulwa ezicacileyo eziqulethe imiyalelo esetyenziselwa ukuchaza isakhiwo sedata, njengeetafile zayo, iirekhodi, iikholam kunye nezinye iindawo.
Umzekelo, enikwe ukuba imithetho ethile ye- syntax ilandelwa, ifayile yeDDL ingasebenzisa umyalelo wokudala ukwakha imida, iiseti zomgca, kunye neetafile. Ezinye izibonelo zomyalelo ziquka i- DROP, RENAME , ne- ALTER .
Qaphela: Ixesha elithi DDL lisetyenziswe ngokubanzi ukuchaza naluphi na ulwimi olubhekiselele kwidatha okanye izakhiwo zedatha, ngoko ke zonke iifayile zolwimi zolwimi zisebenzisa i-DDL ifowuni yokwandiswa. Enyanisweni, iifayile ezininzi zeSQL Data Definition Language ziphela kwiSQL.
Indlela yokuvula ifayile yeDDL
Iifayile zeDDL zinokuvulwa nge-EclipseLink okanye kwi-IntelliJ IDEA. Enye indlela yokuvula ifayile yeDDL inesicelo esisekela ukufunda iifayile zetekethi, njengalezo zikhethwe ngesandla kuleluhlu lwabalungisi beeNcwadi eziHlelelekileyo .
Qaphela: Kwi-IntelliJ IDEA iphepha lokukhuphela lixhumo ezimbini kwi-Windows, MacOS, ne-Linux program. Ikhuphela enye iya kukunika umxholo ogqwesileyo kwaye enye i-edition yoLuntu . Bobabini banokuvula kwaye bahlele iifayile zeDDL kodwa kuphela ukhetho lwasekuhlaleni luvulelekileyo kwaye lukhululekile; enye ikhululekile kuphela ngexesha lovavanyo.
Iphulo: Ukuba ufumanisa ukuba isicelo kwi-PC yakho uzama ukuvula ifayile yeDDL kodwa isicelo esingalunganga okanye ukuba unokuba nesinye iifayile ezifakwe kwiifayile ezivulekileyo zeDDL, khangela indlela yethu yokutshintsha i-default Default Programming File Extension Guide ukwenza olo tshintsho kwiWindows.
Indlela yokuguqula ifayile yeDDL
Uninzi lweefayile zefayile zingaguqulelwa ngokusebenzisa i- converter yefayile yefayile , kodwa andazi naziphi na ezizodwa ezikwazi ukuguqula iifayile eziphelayo .DDL. Ngenxa yokuba le projelo yefayile ibonakala ingaqhelekanga, akunakwenzeka ukuba kukho iindlela ezininzi zokuguqula iifayile zeDDL kwiifom ezahlukeneyo.
Nangona kunjalo, into enye ongayenza ivula ifayile yeDDL ngenye yeefayile ezivulekileyo ngasentla, kwaye usebenzisa iFayile yeProgram okanye Imenyu yokuthumela ngaphandle ukugcina ifayile kwifomathi eyahlukileyo. Uninzi lweenkqubo zixhasa olu hlobo lokuguqulwa, ngoko kukho ithuba elihle lokuba abo baqhagamshelwe apha ngasentla benza njalo.
Enye inketho kukusebenzisa i-Intanethi ye-Intanethi ye-Intanethi Yenza iguqulwe. Iyakwazi ukuguqula iifom ezisekelwe kwisicatshulwa kwezinye iifom zefayile ezifanayo, ngoko kuya kuba luncedo ekuguquleleni umbhalo ngaphakathi kwefayile yeDDL kwenye ifomathi. Ukuba kusebenza, khuphela nje ikopi yombhalo ukusuka ekuguquleni uze unamathisele kumhleli wombhalo ukuze ukwazi ukuwugcina ngefayile efanelekileyo.
Nangona andiqinisekanga ngokupheleleyo ukuba luhlobo olunjani lokuguqulwa, i-IBM ine-tutorial ye-Splitting DDL enokuba luncedo xa usebenzisa ifayela leDDL nge-IBM Redbooks.
Ngaba Ifayile Yakho Ayisayi kuvulwa?
Isizathu sokuba ungakwazi ukuvula ifayile yakho nangemva kokuzama abavuleli beDDL ngasentla, kuba udibanisa ifayile eyahlukileyo kumntu osebenzisa i-DDL ifowuni yokwandiswa. Ezinye izandiso zefayile zikhangeleka ngokufanayo, kodwa oko akuthethi ukuba ifomathi zabo zefayile zihlobene.
Umzekelo, unokubona ukuba kulula kangakanani ukudibanisa ifayile yeDLL kwifayile yeDDL nangona ingavuli neenkqubo ezifanayo okanye isebenzise ifomathi efanayo. Ukuba usebenza ngokufanelekileyo nefayile ye-DLL, ngokuqinisekileyo uya kufumana impazamo okanye iziphumo ezingalindelekanga ukuba uzame ukuvula enye nge-DDL ifayile yokuvula, kwaye ngokulandelelana.
Kuyafana neefayile zeDDD. Ezi zifayile ze-Alpha Five Data Dictionary okanye iifayile ze-GLBasic 3D Data data, kodwa nakwazo zifomathi azibandakanyi nantoni na ngeefayile zeeLwimi zoLwazi lweSQL. Kanye njengamafayile e-DLL, udinga inkqubo ehlukileyo ukuyivula.
Ukuba awunayo idilesi yeDDL, phangela uphando lwefayile ehlanganisiweyo ekupheleni kwefayili yakho. Ngaloo ndlela, unokufumana ukuba yeyiphi ifomathi engaphakathi kwaye zeziphi iinkqubo zesoftware ezihambelanayo nale fayile ethile.
Uncedo olongezelelweyo ngeefayile zeDDL
Ukuba unayo ifayile yeDDL kodwa ayivuli okanye isebenze ngokufanelekileyo, khangela Ufumane Uncedo olungakumbi malunga noqhagamshelwano kumanethiwekhi omphakathi okanye nge-imeyile, ukuthumela kwiifom zenkxaso ye-tech, kunye nokunye. Makhe ndizazi ukuba zeziphi iingxaki ezinokuvula okanye usebenzisa idilesi yeDDL kwaye ndiza kubona oko ndinokukwenza ukunceda.