ray denenberg ralph levan interoperability standards & searching multiple repositories workshop...
TRANSCRIPT
![Page 1: Ray Denenberg Ralph LeVan Interoperability Standards & Searching Multiple Repositories Workshop 20 March 25, 2006; Washington](https://reader030.vdocuments.site/reader030/viewer/2022032516/56649c785503460f9492e269/html5/thumbnails/1.jpg)
Ray Ray DenenbergDenenberg
Ralph LeVanRalph LeVan
Interoperability Standards & Searching Multiple Repositories
Workshop 20Workshop 20
March 25, 2006; WashingtonMarch 25, 2006; Washington
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SRW (Brief) History
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late 90’s …..Initiatives to make Z39.50…. Simpler More comprehensible More easily implemented Web compatible …..while retaining the rich
semantics developed over many years
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Fast Forward ......Fast Forward ......
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SRW/U SRW
Search and Retrieve Web Service
SRU Search and Retrieve via URL
SRW/U Search and Retrieve for the Web
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Z39.50Z39.50
TCPTCP
Classic Classic Z39.50Z39.50
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SRW: over SOAP/HTTP
Z39.50Z39.50
TCPTCP
Classic Classic Z39.50Z39.50
SRWSRW
TCPTCP
““Search and Search and Retrieve web Retrieve web Service”Service”
SOAPSOAP
HTTPHTTP
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SRU: over HTTP
Z39.50Z39.50
TCPTCP
Classic Classic Z39.50Z39.50
SRUSRU
TCPTCP
““Search and Search and Retrieve via URL”Retrieve via URL”
HTTPHTTP
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<SOAP:Envelope> <SOAP:Body> <SRW:searchRetrieveRequest xmlns:SRW="http://www.loc.gov/zing/srw/v1.0/"><SRW:query>dinosaurs</SRW:query><SRW:startRecord>1</SRW:startRecord> <SRW:maximumRecords>10</SRW:maximumRecords> <SRW:recordSchema>mods/</ SRW:recordSchema> </SRW:searchRetrieveRequest> </SOAP:Body></SOAP:Envelope>
SRW -in a SOAP EnvelopeSRW -in a SOAP Envelope
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…..Same request via SRU:
http://acme.com/sru?http://acme.com/sru?query= query= dinosaurs &&maximumRecords=maximumRecords=1010&&startRecord=startRecord=11&&recordSchema=recordSchema=modsmods
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ZINGZING
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ZINGZING
““Z39.50 Z39.50 (international) Next (international) Next
Generation”Generation”
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ZINGZING
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ZINGZING
srwsrw srusru
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ZINGZING
srwsrw srusru
cqlcql
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ZINGZING
srwsrw srusru
cqlcql
““Common Query Language”Common Query Language”
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ZINGZING
srwsrw srusru
cqlcql
““Common Query Language”Common Query Language” --> --> ““Contextual Query Language”Contextual Query Language”
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ZINGZING
srwsrw srusru
cqlcql
ZOOMZOOM
ez3950ez3950
zeeRexzeeRex
RecordRecordUpdateUpdate
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ZINGZING
srwsrw srusru zeeRexzeeRex
Z39.50 Explain: Z39.50 Explain: explained and re-explained and re-engineered in XMLengineered in XML
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ZINGZING
srwsrw srusru zeeRexzeeRex
Z39.50Z39.50
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ZINGZING
srwsrw srusru zeeRexzeeRex
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ZINGZING
srwsrw srusru ZOOMZOOM
Z39.50 Object Z39.50 Object Oriented ModelOriented Model
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ZINGZING
srwsrw srusru ZOOMZOOM
Z39.50Z39.50
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ZINGZING
srwsrw srusru ZOOMZOOM
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ZINGZING
srwsrw srusru
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SRW/U retains these Z39.50 concepts……….
result sets abstract access points abstract record schemas application level diagnostics “Explain”
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….. But differs from Z39.50 in these respects: Web-based Connectionless XML CQL
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….. But differs from Z39.50 in these respects: Web-based Connectionless XML:
Protocol (no ASN.1) + records (no “record syntax”)
CQL user-friendly query
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Z39.50 SRW/U Connections/Sessions/
State Multiple services bound
together in a single protocol
Distinct Search and Present services
Databases Record Syntaxes RPN ASN.1/BER
Connectionless, stateless Different Z39.50 services
are different web services
Search/Present bound in a single web service
Servers Just one: XML String query language XML
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request via SRU:
http://acme.com/sru?http://acme.com/sru?query= query= dinosaurs &&maximumRecords=maximumRecords=1010&&startRecord=startRecord=11
&&recordSchema=recordSchema=modsmods
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Record Schemas dc mods onix marcxml ead
www.loc.gov/sru/record-schemas.html
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request via SRU:
http://acme.com/sru?http://acme.com/sru?query= query= dinosaurs &&maximumRecords=maximumRecords=1010&&startRecord=startRecord=11&&recordSchema=recordSchema=modsmods
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request via SRU:
http://acme.com/sru??version=1.1version=1.1& operation=searchRetrieve& operation=searchRetrieve
&query= &query= dinosaurs &&maximumRecords=maximumRecords=1010&&startRecord=startRecord=11&&recordSchema=recordSchema=modsmods
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http://z3950.loc.gov:7090/voyager
http://z3950.loc.gov:7090/voyager?version=1.1& operation=explain
http://z3950.loc.gov:7090/voyager?version=1.1& operation=searchRetrieve&query=dinosaur
explain:explain:
Search for Search for “dinosaur”:“dinosaur”:
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http://z3950.loc.gov:7090/voyager?version=1.1&operation=searchRetrieve&query=dinosaur
&maximumRecords=1
http://z3950.loc.gov:7090/voyager?version=1.1&operation=searchRetrieve&query=dinosaur
&maximumRecords=1&recordSchema=dc
Search for “dinosaur”, return 1 record, marcxml:Search for “dinosaur”, return 1 record, marcxml:
Search for “dinosaur”, return 1 record, dc:Search for “dinosaur”, return 1 record, dc:
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http://z3950.loc.gov:7090/voyager?version=1.1http://z3950.loc.gov:7090/voyager?version=1.1&operation=searchRetrieve&query=dinosaur&&operation=searchRetrieve&query=dinosaur&
startRecord=2&maximumRecords=1&startRecord=2&maximumRecords=1&recordSchema=dcrecordSchema=dc
return second record:return second record:
http://z3950.loc.gov:7090/voyager?version=1.1http://z3950.loc.gov:7090/voyager?version=1.1&operation=searchRetrieve&query=dinosaur&&operation=searchRetrieve&query=dinosaur&
startRecord=3&maximumRecords=2&startRecord=3&maximumRecords=2&recordSchema=dcrecordSchema=dc
Records three and four:Records three and four:
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<zs:records><zs:records> <zs:record><zs:record> <zs:recordSchema>info:srw/schema/1/dc-v1.1</zs:recordSche<zs:recordSchema>info:srw/schema/1/dc-v1.1</zs:recordSchema>ma> <zs:recordPacking>xml</zs:recordPacking><zs:recordPacking>xml</zs:recordPacking> <zs:recordData><zs:recordData> <srw_dc:dc xsi:schemaLocation=“... <srw_dc:dc xsi:schemaLocation=“... <title>Abbott & Costello cartoons.</title><title>Abbott & Costello cartoons.</title> <creator>Copyright Collection (Library of Congress) <creator>Copyright Collection (Library of Congress) DLC</creator>DLC</creator> (etc.) ..........(etc.) .......... </srw_dc:dc></srw_dc:dc> </zs:recordData></zs:recordData><zs:recordPosition>3</zs:recordPosition><zs:recordPosition>3</zs:recordPosition></zs:record</zs:record>><<zs:record>zs:record> <zs:recordSchema>info:srw/schema/1/dc-v1.1</zs:recordSche<zs:recordSchema>info:srw/schema/1/dc-v1.1</zs:recordSchema>ma> <zs:recordData><zs:recordData> ............ </zs:recordData></zs:recordData><zs:recordPosition>4</zs:recordPosition><zs:recordPosition>4</zs:recordPosition></zs:record></zs:record></zs:records></zs:records>
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http://z3950.loc.gov:7090/voyager?version=1.1http://z3950.loc.gov:7090/voyager?version=1.1&operation=searchRetrieve&query=dinosaur&operation=searchRetrieve&query=dinosaur&maximumRecords=1&recordSchema=mods&maximumRecords=1&recordSchema=mods
MODS record:MODS record:
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http://z3950.loc.gov:7090/voyager?version=1.1http://z3950.loc.gov:7090/voyager?version=1.1&operation=searchRetrieve&query=title=dinosaur&operation=searchRetrieve&query=title=dinosaur
&maximumRecords=10&recordSchema=mods&maximumRecords=10&recordSchema=mods
Fielded Query: ‘title=dinosaur’Fielded Query: ‘title=dinosaur’
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CQLCQL
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Sample CQL Queries Cat
cat and dog
title = cat
dc.title = cat
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Sample CQL Queries Cat (simple)
cat and dog
title = cat
dc.title = cat
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Sample CQL Queries Cat (simple)
cat and dog (boolean)
title = cat
dc.title = cat
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Sample CQL Queries Cat (simple)
cat and dog (boolean)
title = cat (index)
dc.title = cat
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Sample CQL Queries Cat (simple)
cat and dog (boolean)
title = cat (index)
dc.title = cat (index qualified)
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Boolean cat and dog
cat or dog
Cat not dog
cat not dog and fish or frog
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cat not dog and fish or frog
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cat not dog and fish or frog
((cat not dog) and fish) or frog
(cat not dog) and (fish or frog)
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Fielded/index Search
title = cat
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Fielded/index Search
title = cat dc.title = cat bib.title = cat Bath.keyTitle
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title = cat Search Clause
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<index> <relation> <search term>
Search Clause
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title = cattitle = cat
indexindex relationrelation search termsearch term
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title = cattitle = cat
subject = dogsubject = dog
andand
search clauses linked by a booleansearch clauses linked by a boolean
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Relations Title = "the complete dinosaur" title all "complete dinosaur“ title any "dinosaur bird reptile" title exact "the complete dinosaur"
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Relations
Title = "the complete dinosaur" title all "complete dinosaur“ title any "dinosaur bird reptile" title exact "the complete dinosaur"
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= Title = "the complete dinosaur“
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= Title = "the complete dinosaur“
matches “a day in the life of the complete dinosaur“
and“the complete dinosaur goes to Paris“
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= Title = "the complete dinosaur“
matches “a day in the life of the complete dinosaur“
and“the complete dinosaur goes to Paris“
but not “the complete and unabridged dinosaur"
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All Title all "complete dinosaur“
matches “the complete and unabridged dinosaur"
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Title all "dinosaur bird reptile“
does not match “the complete dinosaur"
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Any
Title any "dinosaur bird reptile“
does match “the complete dinosaur"
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Exact title exact "the complete dinosaur" matches"the complete dinosaur"
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Exact title exact "the complete dinosaur" matches"the complete dinosaur"
(but does not match:“ a day in the life of the complete
dinosaur" )
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The anchor character ^
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Recall ……. Title = "the complete dinosaur“
matches “a day in the life of the complete dinosaur“
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Anchoring title="^the complete dinosaur“
would not match “a day in the life of the complete dinosaur”
would match “the complete dinosaur goes to paris”
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Right Anchoring
title="the complete dinosaur^" would not match
“the complete dinosaur goes to Paris”
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http://z3950.loc.gov:7090/voyager?version=1.1http://z3950.loc.gov:7090/voyager?version=1.1&operation=searchRetrieve&query=&operation=searchRetrieve&query=titletitle=dinosaur=dinosaur
&maximumRecords=10&recordSchema=mods&maximumRecords=10&recordSchema=mods
Fielded Query (title)Fielded Query (title)
Recall......Recall......
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http://z3950.loc.gov:7090/voyager?version=1.1http://z3950.loc.gov:7090/voyager?version=1.1&operation=searchRetrieve&query=&operation=searchRetrieve&query=dc.titledc.title=dinosaur=dinosaur
&maximumRecords=10&recordSchema=mods&maximumRecords=10&recordSchema=mods
Same as:Same as:
http://z3950.loc.gov:7090/voyager?http://z3950.loc.gov:7090/voyager?version=1.1& operation=explainversion=1.1& operation=explain
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http://z3950.loc.gov:7090/voyager?version=1.1http://z3950.loc.gov:7090/voyager?version=1.1&operation=searchRetrieve&&operation=searchRetrieve&query=bath.name=dinosaurquery=bath.name=dinosaur
&maximumRecords=10&recordSchema=mods&maximumRecords=10&recordSchema=mods
Qualified Index: bath.name=dinosaurQualified Index: bath.name=dinosaur
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http://z3950.loc.gov:7090/voyager?version=1.1http://z3950.loc.gov:7090/voyager?version=1.1&operation=searchRetrieve&&operation=searchRetrieve&
query=bath.name all “dinosaur%20barney”query=bath.name all “dinosaur%20barney”&maximumRecords=10&recordSchema=mods&maximumRecords=10&recordSchema=mods
bath.name all “dinosaur bath.name all “dinosaur barney”barney”
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http://z3950.loc.gov:7090/voyager?version=1.1http://z3950.loc.gov:7090/voyager?version=1.1&operation=searchRetrieve&&operation=searchRetrieve&
query=bath.name exact dinosaurquery=bath.name exact dinosaur&maximumRecords=10&recordSchema=mods&maximumRecords=10&recordSchema=mods
bath.name exact dinosaurbath.name exact dinosaur
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www.loc.gov/z3950/agency/zing/
www.loc.gov/z3950/agency/zing/srw/
www.loc.gov/standards/sru/
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SRU CQL Explain Operation Scan Operation SRW
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“SRW/U” “SRU”
SRW “SRU over SOAP”
and in addition “SRU via Post”