netbaidu

ResearchonMulti-levelDomainNameComprehensiveInformationManagementChunqiangLiSchoolofInformationManagement,BeijingInformationScienceandTechnologyUniversity,Beijing,100101,China642510571@qq.
comKeywords:multi-level;domainnamesystem;informationmanagement;domainnamesturcture;systemfunction;logicalstructureAbstract.
Domainnamesystemareboththeunderlyingbusiness,butalsoanimportantpartoftheInternetinfrastructure.
ResearchforthisarticleexpandBINDdomainnamesystemmanagementproblems.
First,fourdomainnames,forexample,studythestructureofmulti-leveldomainnamesystem;Then,basedonthelogicalstructureofthedatabaseOracledatabasesystem,designinformationmanagementdomain;Finally,thedesignofthefunctionalstructureofthedomainnamesystemmanagement,usermanagement,informationmaintenanceanddatamaintenancesubsystemconfiguration.
Thestudyoftheapplicationdomaintoachieve,delete,review,approval,change,cancellation,opened,disablefunctionssuchasintegratedmanagement,improvemanagementefficiencyandlevelofinformation,toprovidesolutionsforspecifications,safetyandintegratedmanagementofdomainnames.
IntroductionDomainname,isthenameoftheInternetconsistsofastringofnamesseparatedbydotscomposedofacomputerorgroupofcomputersforelectronicdatatransmissionazimuthidentifycomputers,sometimesalsoreferredtoaslocation,geographicalnameoradministrativeautonomyalocalarearight.
Thepurposeoftheestablishmentofthedomainnameistheaddresseasytorememberandtocommunicateagroupofservers.
DNS(DomainNameSystem)isbothabasicbusinessoftheInternet,butalsoanimportantpartoftheInternetinfrastructure,completethemappinghostnamesandInternetnetworkaddresses.
AlmostalloftheinterconnectionsoftwareareinuseDNS,suchase-mail,remoteterminalprogram,filetransferprogramsandWebbrowsers.
Bind(BerkeleyInternetNameDomain)isanopen-sourceDNSserversoftwarebytheUniversityofCalifornia,Berkeley,developedandmaintained,iscurrentlythemostwidelyusedDNSserversoftwareintheworld,supportsavarietyofUnixandWindowsplatforms.
BINDDNSprotocolspecificationasanexampleofrealization,feature-rich,powerful,safeandstrong.
ButtherearealsoinadequateBINDsystem,domainname,domainnamerecorddata,adoptedatextfilestorage,maintenanceofthedomainnameisthetextfilemanagement;Operationandmaintenanceofdomainnamesinmanualoperation,maintainability,error-prone,inefficient,difficulttomanageandmaintain;Operationandmaintenancecostsarehigh,andthemanagementofprofessionalskillsinBINDhasacertainrequirement;Domainnamesystemitselfisnotthedomainnamerecordswithimmediateeffectandthemanagementmechanismandfunction,domainnameeverychangetomanualprocessing.
Lackofdatasecurityprotectionmechanism,nodomainnamedatabackupandrestorefunction;Nodomainnameregistration,authenticationfunction,cannotachievethedomainnameregistrationandfiling[1,2].
Inviewoftheproblemsexistinginthemanagementofthedomainnametoconstructmulti-leveldomaininformationmanagementsystem,forthespecificationofthedomainname,thesecurityandtheintegratedmanagementtoprovidesolutions.
SystemStructureonMulti-levelDomainNameSystemTwocorrespondencebetweenIPaddressanddomainname:"Onetoone"relationship,IPInternetaddressisunique,anIPaddresscorrespondstotheonlyonehost.
GivenadomainnameaddresscanfindauniqueIPaddress;"Onetomany"relationship,acomputertoprovidemoreservices,bothasaserverandasamailserverwww.
IPaddress,orunique,butitcanbegivenadifferentnameaccordingtomultipleservicesinacomputer,anIPaddresscorrespondingtomultipledomainnames.
DNSisthedomainnamespacetothesiteIP,sothatpeoplecaneasilyaccesstothewebsitebyregisteringthedomainnameofaservice.
IPaddressisanumericaddressonthenetworktoidentifysites,inordertofacilitatememory,theuseofthedomainnameinsteadoftheIPaddressidentifiesthesiteaddress.
DomainnameresolutionisthedomainnametotheIPaddressoftheconversionprocess.
TheresolutionofthedomainnameiscompletedbytheDNSserver.
Thedomainnameiseasytorememberandunderstand,makethenetworkserviceeasiertomanageintheapplicationandtheIPaddressoftheequivalent.
Thedomainnameusesthehierarchicalnamingmechanism,thenamespaceisdividedintoseveralparts,andauthorizedthecorrespondingorganizationmanagement.
Thesyntaxofthedomainnamesystemis"thehostname.
Thelevelnsubdomainname.
.
.
Secondsubdomainnamedomainname.
"Theauthorityhastherighttofurtherdivisionofthejurisdictionofthenamespace,andthenthecorrespondingmanagementauthority.
Domainnamesystemisconfiguredforatreebaseddistributeddatabase,theleafnodeishostname,theintermediatenodeistheappropriatelevelofdomainnameserver,therootnodeisempty.
Domainnameuse(.
)segmentation.
Multi-leveldomainnamesystemstructureasshowninFig.
1[3-6].
Thetop-leveldomainisastandardizedsymboltoensurethegeneralityofthedomainnamesystem.
Top-leveldomainisdividedintothreecategories[7,8]:Isagenerictop-leveldomain,forexample,saysthebusinessenterprisecom,saidnetworkprovidernet,saidthenonprofitorganizationorg;Second,thecountrycodeTopLevelDomain,over200countriesorregionsareallocatedinaccordancewithISO3166countrycodetop-leveldomain.
Forexample,Chinaiscn,theUnitedStatesisus,Japanisjp,twTaiwanislike;Third,thenewgenerictop-leveldomains,forexample,indicateinfoinformationservices,saidthecompanyandthecorporatefirm,representsapersonalnom,representstheartsandotherculturalandentertainment.
Secondarydomainnameisreferstounderthetop-leveldomainnamedomainname,ingenerictop-leveldomainname,referstotheonlinenameofthedomainnameregistrant,suchascctv,ibm,yahoo,andmicrosoft.
Mostofthedomainnamedisputeoccurredinthecomtop-leveldomain,becausemostInternetcompaniesforthepurposeofprofit.
Incountriesorregionsofthetop-leveldomainisdividedintotwocategories,onecategoryisthedomainname,andthemeaningisthesameasthesamegenerictop-leveldomain;Second,theadministrativedomain,suchasBeijingisbj,Shanghaiissh,Tianjinistj.
Third-leveldomainwiththeletter(A-Z,a-z,capitalization,etc.
),numbers(0to9)andhyphen(-)whichareconnectedbyasolidpointbetweenalllevelsofdomain,domainIII(.
)notmorethanFig.
1.
Systemstructureonmulti-leveldomainnamesystemRootdomainGeneraldomainnetorgeducomgovint…Countryorregiondialafauawbbbrcacnfr…Addgeneraldomainfirmstorewebartsrec…Organizationcctvibmhpvwdell…Hostnamemailwww.
.
.
Categorydomaincomgoveduorg…Administrativedibjshlntjsccq…Organizationtsinghuaustbpku…Hostnamemailwww.
.
.
Top-leveldomainSecond-leveldomainThird-leveldomainFourth-leveldomain20charactersinlength.
Ifthereisnospecialreason,werecommendusingtheapplicant'sEnglishname(orinitials)orpinyinname(orinitials)asathird-leveldomains,inordertomaintainthedomainnameofclarityandsimplicity.
Registerdomainnamesneedtofollowtheprincipleoffirstcome,firstregistration,domainnameisavaluableresource,intheneweconomicenvironment,businesssensedomainnamehasbeenfargreaterthanthetechnicalsense,andbecomeinvolvedininternationalscienceandtechnologyunderthenewconditionsimportantmeansofmarketcompetition.
Atthesametime,thedomainnameisanintellectualachievement,thereisaliteralmeaningcommercialmarks,andtrademarks,similarnames,itreflectstheconsiderablecreativity.
Fromaglobalperspective,eventhoughnationallegislationhasnotyetputthedomainnameastheexclusiverightstobeprotected,buttheinternationaldomainnamesystemistodevelopcoordinationthroughtheWorldIntellectualPropertyOrganization,whichfullyshowsthatpeoplehavethedomainnameaspartofintellectualproperty.
DesignondatabaselogicalstructureTypicallythedatastructuredesignincludesconceptualdesign,logicaldesign,physicaldesignanddesignsecurityandconfidentiality.
Logicalstructuredesigntaskistodesigntheconceptualstructureoftheresultisconvertedtoandselectionofdatabasemanagementsystemssupportedbythedatamodelconsistentlogicalstructure.
Relationalmodelandrelationaldatabasemanagementsystemshavebeenwidelyacceptedandwidelyused.
ThesystemusestheOraclerelationaldatabasemanagementsystem.
Oracleisthedatabasehasbeenaleaderinthefieldofproducts,istheworld'smostpopularrelationaldatabasemanagementsystems,portability,easeofuse,functionality,suitableforalltypesoflarge,mediumandsmall,themicrocomputerenvironment.
Atthesametime,butalsoahighefficiency,goodreliability,adapttohighthroughputdatabasesolutions.
LogicalstructureofthesystemdesignresultsshowninTable1.
Table1.
Databaselogicalstructureonmulti-leveldomainnameNoFieldnameDatatypeByteNoFieldnameDatatypeByteBasicinformationAdministratorinformation1Satevarchar21041AdministratorNamevarchar2202ApplyClassvarchar21042AdministratorUnitvarchar2503SystemNamevarchar25043AdministratorMailingvarchar2504DomainClassvarchar21044AdministratorPostcodevarchar265ApplyGradevarchar21045AdministratorPhonevarchar2506SecondLevelDomainvarchar25046AdministratorFaxvarchar2507ThirdLevelDomainvarchar25047AdministratorEmailvarchar2508FourthLevelDomainvarchar250Applicantinformation9HostNamevarchar25051ApplicantNamevarchar22010SubCenterIdnumber4,052ApplicantUnitNamevarchar25011TransmissionStatevarchar21053ApplicantMailingvarchar250ChangeandIPaddressinformation54ApplicantPostcodevarchar2621BeforeDomainNamevarchar25055ApplicantPhonevarchar25022AfterDomainNamevarchar25056ApplicantFaxvarchar25023IPAddressvarchar21557ApplicantfEmailvarchar25024SpareIPAddressvarchar21558ApplyDateTimedate25PortNumbervarchar210ApprovalinformationApplyunitinformation61ApprovalDateTimedate31ApplyPurposevarchar210062ApprovalPeoplevarchar22032ApplyUnitNamevarchar25063ApprovalUnitvarchar25033ApplyUnitShortvarchar250Otherinformation34ApplyUnitPersonvarchar25071OrganizationIDnumber4,035ApplyUnitMailingvarchar210072ServiceAddressvarchar25036ApplyUnitPostcodevarchar2673ServiceDescriptionvarchar25037ApplyUnitAddressvarchar210074Remarksvarchar280AscanbeseenfromTable1,thelogicalstructureofthesystemconsistsofsevencategoriesofinformation,namely"Basicinformation,ChangeandIPaddressinformation,Applyunitinformation,Administratorinformation,Applicantinformation,Approvalinformation,Otherinformation",foreachtypeofinformationByincludingthenumberoffields,suchasmulti-leveldomainnamesysteminformationtoprovideacompletestoragestructure.
FunctiononMulti-levelDomainNameSystemFunctionaldesigncommonlyusedmethodissimulated.
Blockingisoneofthemostimportantdesignthought,thecomplexsystemisdecomposedintoanumberofsmaller,simpler,easiertoestablishandmodifythepart.
Ontheonehand,eachmodulehasrelativeindependence,whichcanbedesignedandimplementedseparately;Ontheotherhand,therelationshipbetweenthemodulesisexplainedinacertainway.
Eachmoduleintheconstraintsoftheserelationshipstogetherconstituteaunifiedwhole,completethesystemfunctions.
Structureandfunctionisthesimulationresults,thesystemfunctionsaredecomposed,representedbythefunctionaldependencygraph,figureineacharectangularframeiscalledafunctionmodule.
Managementinformationsystemofthesystemcanbeviewedasafunctionofthetargetsystemislower,andtheeachfunctioncanalsocontinuetodecomposeformorefunctions.
Functionaldecompositionprocessfromlargetosmall,fromcoarsetofine,fromtoptobottom.
Conceptuallyspeaking,theupperlayerfunctionstocontrolthelowerfunction,themoretheupperlayerfunctionismoregeneral,thelowerthefunctionmorespecific.
Functionaldecompositionisafromtheabstracttotheconcrete,fromthesimpletothecomplexprocess.
Functionmodulecanaccordingtothespecificcircumstancesoflargesomeorsomesmalldecompositionwasthesmallestfunctionalmodulecanbeaprogramofeachprocess,andbigfunctionmodulecancompleteataskisasetofprocedurestobe.
ThesystemfunctionstructureasshowninFig.
2.
Thecorefunctionofthesystemisthedomainnamemanagement,mainlyincludes8functions[9,10].
Amongthem,thedomainnamedeletefortheapplicanttofillintherelevantinformation,mainlyistofillinthe"Databaselogicalstructure"inthe"Basicinformation";NamedeleteDomain,forthedomainnameintheabsenceofrevieworapprovalbeforetheapplicanttodeletetheirownapplicationinformation;Domainnamecheckfordomainnamemanagementauditdomainnameapplicationinformation,theauditresultsincluding"by"and"through",if"through"thereasonsshallbeexplained;Domainnameapprovalforapprovalunitpersoninchargeoftheauditbydomainnameapproved,theresultis"approved"and"notapproved",if"notapproved"toexplainwhy.
NamechangeDomain,fortheapplicationtothemanagementdepartmenttosubmitdomainnamechangeinformation;Domainnamecancellationformanagementofdomainnamecompletelyremoved,theapplicantifneedtouse,onlytoreapplyfor;NameenlightenedDomain,sothattheuseofthedomainnamehasbeenapprovedtoenterthestatecanbeused;Domainnamedisable,forviolationoftheprovisionsofthedomainname,managementdepartmentcanstopusingtheuseofunitscanalsoapplytostopusing.
AuxiliaryfunctionofthesystemisInformationmaintenance,UsermanagementandDatamaintenance.
Wherein,Informationmaintenance,standardizationandcodeisrun-timeinformationsystemstoadd,modifyanddeleteoperations;Usermanagement,thebasicinformationoftheuserentrypermissions,andotherinformationmanagement,aswellastheusertomodifythepassword;Datamaintenance,themaintenanceofthesystemloganddata,includingdatabasebackupandrecovery,configurationfilebackupandrecovery.
ConclusionWiththedevelopmentoftheInternet,alargenumberofenterprisesbysettinguptheirownwebsitetopromotetheirproductsandservices.
Domainnameandenterprise,theproducthasacloserrelationship,hasbecometheenterprisestoentertheinformationsociety,toadapttothemodernmarketcompetitionimportanttool,itscommercialvaluemoreandbigger.
DomainnamemanagementhasbecometheInternetfieldcomplexandimportantwork,thispaperaimingatthedomainnameopensourcedomainnameserverbinddeficienciesinthemanagementfunctionofthedesigndomaininformationmanagementsystemdatabaselogicalstructureandsystemfunction,domainapplication,delete,review,approval,modification,cancellation,open,disablefunctionintegrationmanagementandimprovethemanagementefficiencyandthelevelofinformationtechnology,toavoidtheconflictofdomainnameandrepeatedapplications,hascertaintheoreticalandpracticalsignificance.
AcknowledgementThisworkissupportedbyMajorspecialprojectofnuclearhigh-base(2012ZX01039-004-48);SchoolfundofBeijinginformationscienceandtechnologyuniversity(0925020).
References[1]Z.
L.
Guo,X.
F.
Li,"Regionaldomainnamesystemconstructionandmanagement,"FujianComputer,vol.
25,no.
1,pp.
43-44,2009.
Fig.
2.
Functionstructureonmulti-leveldomainnamesystemMulti-leveldomainnamemanagementsystemDomainnamemanagementInformationmaintenanceUsermanagementDatamaintenanceDomainnameapprovalDomainnamecheckDomainnamedeleteDomainnameapplyDomainnamedisableDomainnameenlightenedDomainnamecancellationDomainnamechangeDomainnamelevelDomainnameclassApplygradeApplyclassOrganizationindexOrganizationcodeApprovalunitApplyunitUsermodifypasswordUserlogininformationqueryUserinformationmanagementUserprivilegemanagementUserloginDatabasebackupDatabaserecoveryConfigurationfilebackupConfigurationfilerecoveryLogmanagement[2]D.
R.
Zhou,L.
Xia,T.
Shu,etal,"ResearchandDesignofDomainNameManagementSystemBasedonBIND,"JournalofYangtzeUniversity(NaturalScienceEdition),vol.
8,no.
7,pp.
54-57,2011.
[3]YakupKo,AlmerimaJamakovic,BartGijsen,"Aglobalreferencemodelofthedomainnamesystem,"InternationalJournalofCriticalInfrastructureProtection,vol.
5,no.
3,pp.
108-117,2012.
[4]CaseyDeccio,"Maintenance,mishapsandmendingindeploymentsofthedomainnamesystemsecurityextensions(DNSSEC),"InternationalJournalofCriticalInfrastructureProtection,vol.
5,no.
2,pp.
98-103,2012.
[5]Baidulibrary,"Domainnamesystemanddomainnamesystem,"http://wenku.
baidu.
com/linkurl=51_Ne9JVBcJRxlHnyPtGiXQ49F_Da_fV6QH0-mydKgdijhyQ4QRL9UC45BFB-GRq6E15pwUFcpUsOYYk7zGC5Wv-ZbYjlVOTWHdKhteTCTe,2015-12-21.
[6]Networkmarketingteachingwebsite,"Thestructureandlevelofthedomainname,"http://www.
wm23.
com/resource/r02/domain_2002.
htm,2015-12-21.
[7]BaiduEncyclopedia,"DomainName,"http://baike.
baidu.
com/linkurl=fWO_IgL7WR1V31jE9VhgoiXp5GMcjGzsfYrZ0vOp83W-_z9IyGGq2R8rjxMyHT3FmB-dzw5yZ30-H2_iJWYuBq,2015-12-21.
[8]UndrahB.
Baasanjav,"Linguisticdiversityontheinternet:Arabic,ChineseandCyrillicscripttop-leveldomainnames,"TelecommunicationsPolicy,vol.
38,no.
11,pp.
961-969,2014.
[9]LIMin,NIWei-min,HEMei,etal,"DesignandimplementationofDNSmanagementsystembasedon.
Net,"JournalofXiamenUniversity(NaturalScience),vol.
46,no.
2,pp.
118-120,2007.
[10]Z.
L.
Yang,"ResearchanddesignofWebdomainnamemanagementsystembasedonBIND,"ComputerCDSoftwareandApplications,vol.
15,no.
17,pp.
239-241,2012.