e13954sql挂起
sql挂起 时间:2021-04-05 阅读:()
XQuerySPARQLSQL2005-11-16Copyright2005OracleCorp.
1SQL,XQuery,andSPARQLWhat'sWrongWithThisPictureXQuerySPARQLSQL2005-11-16Copyright2005OracleCorp.
2JimMelton,OracleCorp.
Editor:allpartsofSQLstandardEditor:XQueryF&O,XQueryXCo-chair:W3CXMLQueryWGAuthor:5SQLbooks,forthcoming"QueryingXML"fromMorganKaufmannXQuerySPARQLSQL2005-11-16Copyright2005OracleCorp.
3QueryLanguages:SQL(SQLQueryLanguage)Alanguageforqueryingcollectionsoftuples:SELECTSALARY,HIRE_DATEFROMEMPSWHEREEMP_ID=13954EMP_IDNAMEHIRE_DATESALARY13954Joe2000-04-144800010335Mary1998-11-2352000…………04182Bob2005-02-1021750XQuerySPARQLSQL2005-11-16Copyright2005OracleCorp.
4QueryLanguages:XQuery(XMLQuery)AlanguageforqueryingtreesofXDMnodes:for$eindocument(my_employees.
xml)where$emp/emp/@emp-id=13954return$emp/emp/salaryemp-id=13954Joe2000-04-1448000.
.
.
.
.
.
.
.
.
XQuerySPARQLSQL2005-11-16Copyright2005OracleCorp.
5CrossingDataModelBoundariesSQL/XMLEMP_IDNAMEHIRE_DATESALARY13954Joe2000-04-144800010335Mary1998-11-2352000…………04182Bob2005-02-1021750PublishingFunctionsXMLTableemp-id=13954Joe2000-04-1448000.
.
.
.
.
.
.
.
.
XQuerySPARQLSQL2005-11-16Copyright2005OracleCorp.
6RDF:CollectionsofTuples(ResourceDescriptionFramework)3-tuples:subject,predicate,objectemps:e13954HR:name'Joe'emps:e13954HR:hire-date2000-04-14emps:e13954HR:salary48000RDFinatable:TrivialSQLstatement:SELECTobjectFROMRDFtableWHEREsubject="emps:e13954"SubjectPredicateObjectemps:e13954HR:name'Joe'emps:e13954HR:hire-date2000-04-14emps:e13954HR:salary48000XQuerySPARQLSQL2005-11-16Copyright2005OracleCorp.
7RDF:NotQuiteThatSimpleRDFcanindicatemembershipinclasses(emps:e13954rdf:typeHR:employee)RDFprefixesareshorthandforfullURIsRDFisagraphdatamodelHR:empemps:e13954emps:e10335dept:salesrdf:typerdf:typeHR:supervisesHR:managesHR:worksInHR:emprdf:typeXQuerySPARQLSQL2005-11-16Copyright2005OracleCorp.
8OWL(WebOntologyLanguage)AparticularvocabularyofRDFRepresentsmeaningsoftermsandrelationshipsbetweenterms:anontologyOWLaddstoRDF:–Relationsbetweenclasses–Cardinality–Equality–Moretypingofandcharacteristicsofproperties–EnumeratedclassesXQuerySPARQLSQL2005-11-16Copyright2005OracleCorp.
9RDFvsTheRelationalModelRelational–Flat,tabular,implicittyping(columndefinition)–Joinsusedtocombineinformationfromtables–Foreignkeys:semanticsandgraph-likestructure–Eachtable:manycolumns=manyattributesofobjectRDF–Maybeviewedasflat;explicittypingcommon–Explicitrelationshipsviapredicates–Inherentgraphstructureviolates"flatness"–TriplesformE-Rmodel(similartoatablew/2columns)XQuerySPARQLSQL2005-11-16Copyright2005OracleCorp.
10RDFvsXDMXDM–Tree-structuredplussequencesofitems–Nosupportforexplicitrelationships(references)–Notuples,notlimitedbytuplesRDF–Networkofobjects;moregeneralthantrees–Relationships/referencesarethepointofRDF–TriplenaturecreatesplethoraoftinydataXQuerySPARQLSQL2005-11-16Copyright2005OracleCorp.
11QueryLanguages:SPARQL(SPARQLProtocolAndRDFQueryLanguage)Designedtoquerycollectionsoftriples……andtoeasilytraverserelationshipsVaguelySQL-likesyntax(SELECT,WHERE)"Matchesgraphpatterns"SELECTsalWHERE{emps:e13954HR:salarysal.
}XQuerySPARQLSQL2005-11-16Copyright2005OracleCorp.
12SPARQLvsSQLSPARQLSELECTsalWHERE{emps:e13954HR:salarysal.
}SQLSELECTsalaryFROMemployeesWHEREemp_id='e13954'XQuerySPARQLSQL2005-11-16Copyright2005OracleCorp.
13SPARQLvsSQLSPARQLSELECTid,salWHERE{idHR:salarysal}SQLSELECTemp_id,salaryFROMemployeesXQuerySPARQLSQL2005-11-16Copyright2005OracleCorp.
14SPARQLvsSQLSPARQLSELECThdateWHERE{idHR:salarysal.
idHR:hire_datehdate.
FILTERsal>=21750}SQLSELECThire_dateFROMemployeesWHEREsalary>=21750XQuerySPARQLSQL2005-11-16Copyright2005OracleCorp.
15SPARQLvsSQLSPARQLSELECThdateWHERE{idHR:salarysal.
idHR:hire_datehdate.
FILTERsal>=21750}SQLSELECTv.
hire_dateFROMemp_varsASv,emp_constsAScWHEREv.
salary>=21750ANDv.
emp_id=c.
emp_idXQuerySPARQLSQL2005-11-16Copyright2005OracleCorp.
16ConclusionsSQL:Greatforfindingdatafromtabularrepresentations,cangetcomplexwhenmanytablesareinvolvedinagivenqueryXQuery:Greatforfindingdataintreerepresentations,cangetcomplexwhenmanyrelationshipshavetobetraversedSPARQL:Goodpatternmatchingparadigm,especiallywhenrelationshipshavetobeusedtoansweraquerySurprisingconclusion:SPARQLcanbetranslatedtoSQLandpossiblytoXQuery!
XQuerySPARQLSQL2005-11-16Copyright2005OracleCorp.
17*,**"0&)10&)1/0&)'1"+'#23*45'#0&126'*'#6'4"70&),1"0&&1#''$&('"8$66$,9$*:96"#/0&@@1&0&(1"%"7*,*'F&(0&&(1"F&5H&(#$#"I'**2*''4"*6J$',0&)!
'*1I+HKH+;(HH$#,'I2#4'-9570&7)1''*'*''"H*-2'4.
'##L.
9'97;I=I;7I"2)'4I'#*"DEFCGF@@A#>#/*"6249$'9H$6#6''9$#6'#62#/4.
*9*'"J2/4.
'99**''**";'0&12'*#'$#4"$*$9*90&),*1+*'69,*'9MC2/4-,*2$CA@@@"@@4.
'*)*2*4-2CEDA)@G)CA4.
"-0&)1.
F&2424&(2/4"+**+**8$'24.
"7,*9#9*#F;0&),*1'*&"DEFCGF@@A#>#/!
"#24>#-0&*)#10&*)#1.
&('-0&*)'10&*)'1.
0&)''1.
24*0&*)#10&*)#1*'$"I0&*)'10&*)'1*'$",!
-+"/+0"()1"/23"/+3//-+',/4"4+!
546/3',/4"4+3,!
-+"/+3"/+//-+3//-+',/4"4+3',/4"4+3,!
-+,!
-'#78#+"/+/,16"'"3"/+H(7HH+#C@A#///-+8$.
%%%%3//-+',/4"4+/24"(3',/4"4+3,!
-+3,!
-+',/4"4+',/4"4'#7$546/#+/"/(5#$%.
#3+3',/4"4+',/4"4/"/(5##3+3',/4"4+',/4"4'#*9#24"(#+/"/(5#$%.
#3+3',/4"4+3',/4"4++&,*>5!
:"5";'!
&:'"5";'!
&C@A#>*F'PC@A#>*F'PC@A@@@"@@*>C@A#>*F'P**>C*>E#>*F'P**>E#>*F'PECA@@"@@*>E#>*F'P**>NF'P""""""*>C#>*F'PADEFCGF@@A#>#/7&4//-61C'B;,!
-3&!
0"A''B;',/4"43&!
0"A/"/(D***2*'4'/9**#9#'''"'',*6''"5'24*7'''6*''#$6#6**'L.
6*,*'6'"56**$6*5!
'#6'61'*"+6*>C#>*F'P*>C@A*>C#>*F'P(/*>N#>*F'P*>C@AF'P""""""GDEFCGF@@A#>#/''#/'"'#'"QR!
"!
"#QRQ'R!
"#Q!
'*RQ,RQ&R$Q@@R;7F;H!
E@DA>7::@@"Q(R$Q&(R;7F;H!
E@DA)CO>0$%"7Q7R12"21""DDEFCGF@@A#>#/
1SQL,XQuery,andSPARQLWhat'sWrongWithThisPictureXQuerySPARQLSQL2005-11-16Copyright2005OracleCorp.
2JimMelton,OracleCorp.
Editor:allpartsofSQLstandardEditor:XQueryF&O,XQueryXCo-chair:W3CXMLQueryWGAuthor:5SQLbooks,forthcoming"QueryingXML"fromMorganKaufmannXQuerySPARQLSQL2005-11-16Copyright2005OracleCorp.
3QueryLanguages:SQL(SQLQueryLanguage)Alanguageforqueryingcollectionsoftuples:SELECTSALARY,HIRE_DATEFROMEMPSWHEREEMP_ID=13954EMP_IDNAMEHIRE_DATESALARY13954Joe2000-04-144800010335Mary1998-11-2352000…………04182Bob2005-02-1021750XQuerySPARQLSQL2005-11-16Copyright2005OracleCorp.
4QueryLanguages:XQuery(XMLQuery)AlanguageforqueryingtreesofXDMnodes:for$eindocument(my_employees.
xml)where$emp/emp/@emp-id=13954return$emp/emp/salaryemp-id=13954Joe2000-04-1448000.
.
.
.
.
.
.
.
.
XQuerySPARQLSQL2005-11-16Copyright2005OracleCorp.
5CrossingDataModelBoundariesSQL/XMLEMP_IDNAMEHIRE_DATESALARY13954Joe2000-04-144800010335Mary1998-11-2352000…………04182Bob2005-02-1021750PublishingFunctionsXMLTableemp-id=13954Joe2000-04-1448000.
.
.
.
.
.
.
.
.
XQuerySPARQLSQL2005-11-16Copyright2005OracleCorp.
6RDF:CollectionsofTuples(ResourceDescriptionFramework)3-tuples:subject,predicate,objectemps:e13954HR:name'Joe'emps:e13954HR:hire-date2000-04-14emps:e13954HR:salary48000RDFinatable:TrivialSQLstatement:SELECTobjectFROMRDFtableWHEREsubject="emps:e13954"SubjectPredicateObjectemps:e13954HR:name'Joe'emps:e13954HR:hire-date2000-04-14emps:e13954HR:salary48000XQuerySPARQLSQL2005-11-16Copyright2005OracleCorp.
7RDF:NotQuiteThatSimpleRDFcanindicatemembershipinclasses(emps:e13954rdf:typeHR:employee)RDFprefixesareshorthandforfullURIsRDFisagraphdatamodelHR:empemps:e13954emps:e10335dept:salesrdf:typerdf:typeHR:supervisesHR:managesHR:worksInHR:emprdf:typeXQuerySPARQLSQL2005-11-16Copyright2005OracleCorp.
8OWL(WebOntologyLanguage)AparticularvocabularyofRDFRepresentsmeaningsoftermsandrelationshipsbetweenterms:anontologyOWLaddstoRDF:–Relationsbetweenclasses–Cardinality–Equality–Moretypingofandcharacteristicsofproperties–EnumeratedclassesXQuerySPARQLSQL2005-11-16Copyright2005OracleCorp.
9RDFvsTheRelationalModelRelational–Flat,tabular,implicittyping(columndefinition)–Joinsusedtocombineinformationfromtables–Foreignkeys:semanticsandgraph-likestructure–Eachtable:manycolumns=manyattributesofobjectRDF–Maybeviewedasflat;explicittypingcommon–Explicitrelationshipsviapredicates–Inherentgraphstructureviolates"flatness"–TriplesformE-Rmodel(similartoatablew/2columns)XQuerySPARQLSQL2005-11-16Copyright2005OracleCorp.
10RDFvsXDMXDM–Tree-structuredplussequencesofitems–Nosupportforexplicitrelationships(references)–Notuples,notlimitedbytuplesRDF–Networkofobjects;moregeneralthantrees–Relationships/referencesarethepointofRDF–TriplenaturecreatesplethoraoftinydataXQuerySPARQLSQL2005-11-16Copyright2005OracleCorp.
11QueryLanguages:SPARQL(SPARQLProtocolAndRDFQueryLanguage)Designedtoquerycollectionsoftriples……andtoeasilytraverserelationshipsVaguelySQL-likesyntax(SELECT,WHERE)"Matchesgraphpatterns"SELECTsalWHERE{emps:e13954HR:salarysal.
}XQuerySPARQLSQL2005-11-16Copyright2005OracleCorp.
12SPARQLvsSQLSPARQLSELECTsalWHERE{emps:e13954HR:salarysal.
}SQLSELECTsalaryFROMemployeesWHEREemp_id='e13954'XQuerySPARQLSQL2005-11-16Copyright2005OracleCorp.
13SPARQLvsSQLSPARQLSELECTid,salWHERE{idHR:salarysal}SQLSELECTemp_id,salaryFROMemployeesXQuerySPARQLSQL2005-11-16Copyright2005OracleCorp.
14SPARQLvsSQLSPARQLSELECThdateWHERE{idHR:salarysal.
idHR:hire_datehdate.
FILTERsal>=21750}SQLSELECThire_dateFROMemployeesWHEREsalary>=21750XQuerySPARQLSQL2005-11-16Copyright2005OracleCorp.
15SPARQLvsSQLSPARQLSELECThdateWHERE{idHR:salarysal.
idHR:hire_datehdate.
FILTERsal>=21750}SQLSELECTv.
hire_dateFROMemp_varsASv,emp_constsAScWHEREv.
salary>=21750ANDv.
emp_id=c.
emp_idXQuerySPARQLSQL2005-11-16Copyright2005OracleCorp.
16ConclusionsSQL:Greatforfindingdatafromtabularrepresentations,cangetcomplexwhenmanytablesareinvolvedinagivenqueryXQuery:Greatforfindingdataintreerepresentations,cangetcomplexwhenmanyrelationshipshavetobetraversedSPARQL:Goodpatternmatchingparadigm,especiallywhenrelationshipshavetobeusedtoansweraquerySurprisingconclusion:SPARQLcanbetranslatedtoSQLandpossiblytoXQuery!
XQuerySPARQLSQL2005-11-16Copyright2005OracleCorp.
17*,**"0&)10&)1/0&)'1"+'#23*45'#0&126'*'#6'4"70&),1"0&&1#''$&('"8$66$,9$*:96"#/0&@@1&0&(1"%"7*,*'F&(0&&(1"F&5H&(#$#"I'**2*''4"*6J$',0&)!
'*1I+HKH+;(HH$#,'I2#4'-9570&7)1''*'*''"H*-2'4.
'##L.
9'97;I=I;7I"2)'4I'#*"DEFCGF@@A#>#/*"6249$'9H$6#6''9$#6'#62#/4.
*9*'"J2/4.
'99**''**";'0&12'*#'$#4"$*$9*90&),*1+*'69,*'9MC2/4-,*2$CA@@@"@@4.
'*)*2*4-2CEDA)@G)CA4.
"-0&)1.
F&2424&(2/4"+**+**8$'24.
"7,*9#9*#F;0&),*1'*&"DEFCGF@@A#>#/!
"#24>#-0&*)#10&*)#1.
&('-0&*)'10&*)'1.
0&)''1.
24*0&*)#10&*)#1*'$"I0&*)'10&*)'1*'$",!
-+"/+0"()1"/23"/+3//-+',/4"4+!
546/3',/4"4+3,!
-+"/+3"/+//-+3//-+',/4"4+3',/4"4+3,!
-+,!
-'#78#+"/+/,16"'"3"/+H(7HH+#C@A#///-+8$.
%%%%3//-+',/4"4+/24"(3',/4"4+3,!
-+3,!
-+',/4"4+',/4"4'#7$546/#+/"/(5#$%.
#3+3',/4"4+',/4"4/"/(5##3+3',/4"4+',/4"4'#*9#24"(#+/"/(5#$%.
#3+3',/4"4+3',/4"4++&,*>5!
:"5";'!
&:'"5";'!
&C@A#>*F'PC@A#>*F'PC@A@@@"@@*>C@A#>*F'P**>C*>E#>*F'P**>E#>*F'PECA@@"@@*>E#>*F'P**>NF'P""""""*>C#>*F'PADEFCGF@@A#>#/7&4//-61C'B;,!
-3&!
0"A''B;',/4"43&!
0"A/"/(D***2*'4'/9**#9#'''"'',*6''"5'24*7'''6*''#$6#6**'L.
6*,*'6'"56**$6*5!
'#6'61'*"+6*>C#>*F'P*>C@A*>C#>*F'P(/*>N#>*F'P*>C@AF'P""""""GDEFCGF@@A#>#/''#/'"'#'"QR!
"!
"#QRQ'R!
"#Q!
'*RQ,RQ&R$Q@@R;7F;H!
E@DA>7::@@"Q(R$Q&(R;7F;H!
E@DA)CO>0$%"7Q7R12"21""DDEFCGF@@A#>#/
器安装环境和运维管理工具推荐
今天看到一个网友从原来虚拟主机准备转移至服务器管理自己的业务。这里问到虚拟主机和服务器到底有什么不同，需要用到哪些工具软件。那准备在下班之间稍微摸鱼一下整理我们服务器安装环境和运维管理中常见需要用到的软件工具推荐。第一、系统镜像软件一般来说，我们云服务器或者独立服务器都是有自带镜像的。我们只需要选择镜像安装就可以，比如有 Windows和Linux。但是有些时候我们可能需要自定义镜像的高级玩法，这...
[6.18]DogYun：充100送10元,态云7折,经典云8折,独立服务器月省100元,幸运大转盘最高5折
DogYun是一家2019年成立的国人主机商，提供VPS和独立服务器租用等，数据中心包括中国香港、美国洛杉矶、日本、韩国、德国、荷兰等，其中VPS包括常规VPS(经典云)和按小时计费VPS(动态云)，使用自行开发的面板和管理系统，支持自定义配置，动态云各个硬件独立按小时计费，带宽按照用户使用量计费(不使用不计费)或者购买流量包，线路也可以自行切换。目前商家发布了6.18促销方案，新购动态云7折，经...
搬瓦工：香港PCCW机房即将关闭;可免费升级至香港CN2 GIA;2核2G/1Gbps大带宽高端线路,89美元/年
搬瓦工怎么样?这几天收到搬瓦工发来的邮件，告知香港pccw机房(HKHK_1)即将关闭，这也不算是什么出乎意料的事情，反而他不关闭我倒觉得奇怪。因为目前搬瓦工香港cn2 GIA 机房和香港pccw机房价格、配置都一样，可以互相迁移，但是不管是速度还是延迟还是丢包率，搬瓦工香港PCCW机房都比不上香港cn2 gia 机房，所以不知道香港 PCCW 机房存在还有什么意义?关闭也是理所当然的事情。点击进...
sql挂起为你推荐
-
蓝瘦香菇被抢注蓝瘦香菇当事人被质疑炒作称没想红 蓝瘦香菇什么意思商标注册流程及费用商标注册流程及费用？lunwenjiancewritecheck论文检测准吗?psbc.com95580是什么诈骗信息不点网址就安全吧!同ip站点查询如何查看几个站是不是同IPseo优化工具SEO优化要用到什么软件？125xx.com115xx.com是什么意思www.niuav.com在那能找到免费高清电影网站呢 ？se95se.comwww.sea8.com这个网站是用什么做的 需要多少钱www.idanmu.com万通奇迹，www.wcm77.HK 是传销么？