外文文献及翻译.docx

外文文献及翻译.docx

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外文文献及翻译

ToconnectSQLServerdatabase

Firstweintroducethebasicknowledgeofthedatabase,beregardedasthewarm-upexercisethatstudydatabaseweavedistancefront!

1.warm-upexercise

Needingfirstavowalisrelationdatabasethatdatabaseknowledgethatwehereintroduceallpoint.Theso-calledrelationdatabaseistomeandataasthattheformgather,passingtoestablishsimpleformanakindofdatabaseforofrelationtodefiningconstruction.

Iignorethewatchathowsavingwayinphysicsinthedocumentindatabaseis,itcanseetomakeanalineforwithrow,withelectronicsformissimilarwiththerow.Inrelationdatabase,thelinewerecalledtherecord,buttherowtheniscalledwordsegment.

Thisforminsideeachanallinformationsforisarecord,itincludingparticularcustomer,buteachrecordthenincludedthesametypewiththewordsegmentofthequantity:

Customer'snumber,nameetc.

Formislogicsetthatakindofrelatedinformationthatpressalineofarrangingwithrow,similarinsingleforminwork.

Eachrowofthewordadatabaseforminsidecallsawordsegment.Watchisfromeverykindofwordadefinitionofitscontainmentof,eachwordadatafordescribingitsimplying.Whilecreatingtosetupadatabase,thebeardassignforeachwordsegmentathepiecebelongstothesexwiththeotheraccordingtothetype,biggestlength.Thewordsegmentcanincludeeverykindofwordsign,arithmeticfigureevensketch.

Aninformationofrelevantcustomerdepositsinthelineoftheform,iscalledrecord.Byanylarge,arbitrarilytworecordsfordatabaseformtocreatesetupcan'tbesame.

Keybeacertainwordsegment（orseveralwordssegment）oftheforminside,it（）forfastinspectbutdriveindex.Thekeycanbeunique,andalsocanthentherightandwrongisunique,beingdecidedbyit（）whetheradmissionrepetition.Uniquekeycanspecifyformainkey,usingeachonethatcometouniquemarkingform.

Thenormturnsthedatabasedesignofmissionbemethodthatthedataofbuildup,butthedataofbuildup,shouldcandissolveotioserepetition,andforhavethenecessaryinformationofferingtochecktoseekthepathquickly.Forattainingthiskindoftargetbutseparateinformationtotheprocessgonetoineverykindofindependentform,becalledthenormturn.

ItiscomplicatedprocesstousemanyappointedrulestoproceedthenormwiththetypeofthedifferentClassthatnormturn.Thatprocessstudiesanddiscussalreadybeyondthereachoftextualscope.But,thenormofthesimpledatabaseinmajorityturnandcanusethesimpleexperienceinunderneathrulecompletes:

includetheformoftheinformationofrepetitionmustbedividedintoindependentafewformsdissolverepetition.

Ifwehavechosentolearn12curricular1000students,theeachcurricularelucidationwillshowwiththeteacher100many-tochoosethatcurricularandeachstudentrepeatonce.Toavoidthiskindoflowefficiency,shouldtoturnthedichotomousandindependentforminformtothenorm,anisusedtomeanthestudent,theanotherusesmeanthecourse.

Nowtheformwasturnedbythenorm,so,tochangestheparticularandcurricularcoursedescribeor"data",aslongaschangearecordallright.Isabasicknowledgeconcerningdatabaseabove,thisiswhatstudydatabaseplaitdistancemust.Althoughthedatabasetechniqueisusedasacourse,itsdepthisnotthisspaceandcandescribewiththewidedegreeof,beusedastheprimerwithsimpledatabaseplaitthedistanceshouldbeallrightalready.Like,underneathwecanstartpracticing.Weusuallymeetthedatabasesystemistoregistersthesystem,ignoringyouareintheunit,orattendwhatbuildup,theregisteristocansnothelpof,anditoftheconstructionismoresimple,wetakearegistersystemasanexample.Theanalysisisonceadataforinvolving.

2.understandingtheelements

Fortheregister,wanttheonthetrailofinformationinclude:

name、sex、nativeplace、age、dateofbirth、unit、address、postalservicecodes、telephone、FAX.Certainly,cancreatetosetupaforminbrief,makeaboveeachpieceaccordingtoitemtoshouldawordsegment.Needtopointtheformthemainkeyinpartiesnow,inordertouniquemarkingeacharecord,increaseregisternumberconductandactionsuniquekeyrespectivelyinregisterform,guaranteeatworecordslikethisalldifferent.Tothedatabaseaftermakinganaboveanalysis,wecanstartestablishingthedatabase.

3.setupthefirmincamp

Herewestudytoestablishthedatabasehow,needingtomakesurethetypethattoestablishthedatabasefirst.PassinVisualBasicthedatainterviewcontrolpieceordatainterviewobject（DAO）canvisitthefollowingdatabase:

1）ThedatabaseofJET,namelyMicrosoftAccess

2）ThedatabaseofISAM,suchas:

DBase,etc.ofFoxPro

3）ThedatabaseofODBC,everyfollowthestandardofODBCcustomer/serverdatabase.Suchas:

MicrosoftSQLServer,Oracle

Byanylarge,ifdevelopthepersonalsmallscaleddatabasesystem,useAccessdatabasecomparisonaccommodation,todevelopthebigandmedium-sizeddatabasesystemusesthedatabaseofODBCfester.ButdBasewiththedatabaseofFoxProbecauseofalreadydated,unlessspecialcircumstance,donotuseotherwise.Inourexample,chosetousethedatabaseofAccesscertainly.EstablishthedatabaseofAccesscontaintwokindsofmethods:

WhileestablishingthedatabaseinMicrosoftAccess.Click"newsetup"buttoncanestablishthenewform.Herewemainintroductionthesecondmethod:

Theusagecanseetoturnthedatamanagementmachine,donotneedtoweavethedistanceandthencancreatetosetupthedatabase.Canseetoturnthedatamanagementmachineistheappliedprocedureofagreatuse,itisaVBbusinessenterpriseversionissupplementarywiththeprofessionversion,inthecatalogue\..\Devastation\vb\samples\theVisdataisnext,itsinterfaceisasfollowsthediagram.Clickthemenu"document"itemisnext"newsetup"sonitem"MicrosoftACCESS"sonitemof"edition7.0MDB"item.Inputthenewsettingupthenameofthedatabaseinflickwindowwayopen"register",appeartheunderneathshowthewindowway:

Wantthebornandnewform,thesingleshotinrightkeydatabasewindowwayflicksthemenuopen,thenthechoice"newform"ordinaries,establishingin"watchconstruction"dialogboxappearedlateronawordforwantingsegment.Theeverytimefacestojoinintheformnewwordsegment,singleshot"incrementwordsegment"button,willappearof"incrementwordsegment"dialogbox."Incrementwordatypefor"optionsinthedialogbox,accordingtowordsegment.Inourtheregisterdatabasethatestablish,thetypeoftheeachwordsegment.Wanttonoticeofis,becausethewordsegmentregistersthenumberbeuseduniquemarkingrecordof,therefore,itcan'tbeinputtedbycustomer.Sowhiledefiningtheword'ssegmentneedtobedefinedforLongdatatype,the"automaticbornwordsegment"itemisvalid,andpicksoutthisitem.Bethecustomerlikethistoinputtorecordwithotherthedifferentvalueeveryinputanewrecord,systemwouldontheword'ssegmentautomatically.

InACCESSdatabase,thekeywordrealizeswiththeindexof,conductandactionsplaitdistancepersonnelatgathertoweavethedistancetotherecordoftheformtype,needstoadjusttouseindex.Whilesearching,thetechniqueofRushmoreusestheindexinformationtheexcellentturningthesearchautomatically.Aftercompletingtheformdefinition,click"incrementindex"button,flicksuchaspenfigure5showthewindowway.Inwindowwaytherightsidecontainthreeoptioned,itsmeaning,suchastable,12.Increasetheindexdialogboxoptions.Aftercompletingsuchasfigure6.Certainly,theacademicassociationdatabaseestablishestoonotadynastythebusinessoftheonenight,thereadernoharmmuchpracticesonce.

VisitdatabasesdesignandthedevelopmentoftheapplicationproceduresofMSVisualBasicsofthedatabasesoftheSQLServer.Whendesignasystem,thecustomerstillneedstocomprehendtousetocometovisittheplaitdistanceofaskthedataofSQLServertoconnect.Theoriginwasdetailedtoelaboratethattheusageopentypedatabaseconjunction（theOpenDatabaseConnectivity,ODBC）adjuststoconnecttheobjectstoconnectwiththeclass,stillhavingthedatainterviewsobject（theDataAccessObjects,theDAO）andthelong-rangedataobjects.

Designandweavetowritelargeandcomplicatedandappliedprocedure'sdatabasedesignforthesoftwaredeveloperisachallenge,needtochoosetoweavethedistancelanguageandtools,doanaccommodationfortheSQLServer,choosethecalculatewayandthedatastructures,stillneedtodesignthesketchcustomerinterfaceandtheapplicationprocedurestoconnect.Thedecisionwithinthemostimportantsoftwaredesignisappliedfixedpositionoftheprocedure.Inotherwords,designmustspecifythesystemofwhichpartsaredata,businessrule,andthedataentranceprocedureandusedforcirculatingthecodeofotherpart.TheMSVisualBasicsupportstheplaitdistancethatsomedatabasesmanagethesystemsconnect,especiallySQLServer.AdjusttoconnecttoincludetheODBCandDB-Librariestoconnectthe,objecttoconnecttoincludethedatainterviewobject（DAO）,longrangedataobject（theRDO）,theOLEDBandtheActiveXDataObjects（ADO）withtheclass,theSQLthatreturnsthecapableSQLServertomanagethemissiondistributestomanagetheobject（theSQLDistributedmanagementObjects,SQL-DMO）toconnect.Connecttheocularsrightchoicecanimprovethewholefunctionofsystemandthedevelopmentspeedbiggest.Designthelargedatawarehousesystemneedstochoosetheappliedmodelproperly.Traditionalcustomer/service'smodeldependsontojoininthecenterlayerbutgettheimprovementtob