Advisory Group Meeting 12 October 2005 The Clever Use of Metadata in e. Government and e. Business Recordkeeping Processes in Networked Environments www. monash. edu. au
Outline • • • Metadata re-use and Interoperability Issues Metadata Broker Development Service Oriented Architectures Web Services Technologies Implementing the Metadata Broker as a web service • Project Deliverables and timeframe • Feedback www. monash. edu. au 2
Imagining automated metadata re-use Points to description Registry Service Descriptions Locate service Describes service Finds service Exchange messages Consumer Translation Service Source: Based on diagram from http: //www. softstar-inc. com / www. monash. edu. au 3
Traditional recordkeeping architectures Web Management System Archival Gateway Email Desktop Applications Business Systems Records Management Application Archival Management Application Learning Object Portal Other Portals www. monash. edu. au 4
Recordkeeping metadata brokering Records Management Application Email and Desktop Applications Web Management Systems Metadata Broker Business Information Systems Archival Management Application Archival Gateways Subject Portals Community Archives www. monash. edu. au 5
Recordkeeping metadata brokering (cont. ) Records Management Application Email and Desktop Applications Web Management Systems Metadata Broker Business Information Systems Archival Management Application Archival Gateways Subject Portals Community Archives www. monash. edu. au 6
Service oriented architectures Open systems Open standards Service Oriented Architecture Open communication protocols Standards Metadata www. monash. edu. au 7
Web services technologies WSDL Service Descriptions Points to description UDDI Registry Locate service Describes service Finds service Exchange messages - SOAP Consumer Service Source: Based on diagram from http: //www. softstar-inc. com / www. monash. edu. au 8
CRKM Metadata Broker Aug 05 Translation Services Validation Services Request for Schema Incoming metadata Registration information Metadata Registry Authoritative information on metadata schemas, metadata elements and crosswalks in human readable and machine processable forms Schema information Crosswalk Compiler Outgoing metadata Metadata Repository Machine processable representations of metadata schemas & crosswalks Temporary store of metadata instances for translation and transformation www. monash. edu. au 9
Metadata broker as web services cluster Request the AGEMS – RKMSCA crosswalk Translation Service Metadata Registry Web Service Layer Request to translate AGEMS to RKMSCA AGEMS Web Service Layer Intranet AGEMS – RKMSCA Crosswalk Service RKMSCA Web Service Layer Metadata Broker Client www. monash. edu. au 10
Layers of interoperability Layer 3 Abstract e. g. Recordkeeping metadata standards Layer 2 Representation e. g. XML, RDF Layer 1 Transport and Exchange From: Thomas Baker et al. , Principles of Metadata Registries, 2002 www. monash. edu. au 11
To make this happen … Ø Stop assuming existing standards are interoperable RKMS Date • Created • Transacted • Registered RKMS Identifier AGLS Date • Created • Modified • Valid • Issued AGLS Identifier www. monash. edu. au 12
To make this happen … Ø Rigorously define metadata interoperability in terms of element semantics, their value domains and encoding schemes Ø Develop concrete recordkeeping metadata standards based on dynamic metadata models with multiple entities Ø Develop machine processable versions of standards representing both the syntax and semantics www. monash. edu. au 13
To make this happen … Ø Implement the metadata broker concept Ø Build operational web services to enable metadata translation Ø Re-engineer and re-position recordkeeping and archiving processes in line with a continuum view Ø Realise the vision – Create Once, Use Many Times www. monash. edu. au 14
Project Deliverables • Conceptualise and Build the Metadata Broker as a Web Service – – Services in and out of scope Metadata Registry Requirements Registration interface Validation Services • Thesis contribution – investigating types of metadata interoperability. (Oct/Dec 2005) www. monash. edu. au 15
Metadata Broker Service Web services Layer Translation Service Metadata Registry Metadata Web. Service. Crosswalk Java. Object. Crosswalk Stylesheet. Crosswalk Rule. Based. Crosswalk www. monash. edu. au 16
Re-engineering work processes • Test whether re-engineered work processes within a continuum framework can support optimal use of the Metadata Broker as a Web Service. • What infrastructure must be available to the Web Service – Feedback to standard setters – Tools? – Impact on organisational work processes? (Late Nov 2005) www. monash. edu. au 17
Evaluation • Evaluate whethere is a business case supporting clever metadata reuse? (Jan/Feb 2006) www. monash. edu. au 18
Conclusion Reporting Demonstrator (April 2006) Feedback and Discussion www. monash. edu. au 19
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