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Paul Spencer Using the ebXML Registry for e-Government Schema Management.

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Presentation on theme: "Paul Spencer Using the ebXML Registry for e-Government Schema Management."— Presentation transcript:

1 Paul Spencer Using the ebXML Registry for e-Government Schema Management

2 © 2004 Boynings Topics  The need for a standards-based repository  Some existing repositories in Government  The requirements  The OASIS eGov TC proof of concept

3 © 2004 Boynings The need  Large organizations need re-usable data items with known semantics  These components are required as XML Schema components  Components must be shared within and often outside the organization  Components may use external components such as code lists

4 © 2004 Boynings The need  A registry/repository that stores both XML schema components and metadata  a standards-based approach to allow sharing

5 © 2004 Boynings An early attempt  The UK Government Data Standards Catalogue pre-dated most of the standards work  An XML-based metadata catalogue linked to small XML schema documents  Schema documents can be imported into other schemas

6 © 2004 Boynings UK GDSC

7 © 2004 Boynings A slightly later version  The UK MOD already had a data dictionary  SQL Server  several thousand data items  Now needed to add XML Schema components  Additional requirement was to assemble "message" schema documents from components

8 © 2004 Boynings A slightly later version  Quick solution was to create a text file of components  use "id" attribute to link to data dictionary  use "mod:Version" attribute to indicate component version  use a self-describing assembly mechanism

9 © 2004 Boynings An MOD schema component

10 © 2004 Boynings MOD DDR

11 © 2004 Boynings MOD DDR

12 © 2004 Boynings Requirements  From these and other projects around the world, we can get requirements relating to  repository population  schema assembly  schema use  import/export/federation  repository management

13 © 2004 Boynings Registry requirements

14 © 2004 Boynings Registry requirements

15 © 2004 Boynings Registry requirements

16 © 2004 Boynings Registry requirements

17 © 2004 Boynings Registry requirements

18 © 2004 Boynings OASIS eGov TC pilot project  Discussion of the MOD work exposed a great deal of interest in OASIS  eGov TC has approved a PoC / showcase  Aim is to  create a registry/repository to meet MOD/UK Gov and international government needs  define best practice for its use

19 © 2004 Boynings OASIS eGov TC pilot project  Main team  Paul Spencer  Farrukh Najmi, Sun Microsystems  Carl Mattocks, CHECKMi  Many others involved from other organizations

20 © 2004 Boynings OASIS eGov TC pilot project  Initial tasks are to map metadata requirements and build a registry  Aspects of the requirement necessitate ebXML Registry v2.5+  Will use open source freebXML (ebxmlrr) registry v3

21 © 2004 Boynings Metadata Mapping  Different applications have different metadata requirements  Currently mapping UK e-GMS and MOD metadata to the ebRIM  e-GMS is based on Dublin Core and forms the basis of MiREG – the European e-Government metadata standard  MOD metadata is extended from e-GMS  Scope for further mappings  Scope for semantic registry  ebXML Registry Semantic Content Management SC  eGov Harmonising Taxonomies SC

22 © 2004 Boynings Metadata Mapping

23 © 2004 Boynings Registry Metadata, Repository Artifacts - Phase 1  Enter schemas and the associated metadata  Enter schema components (global data types, elements and attributes) and associated metadata  Enter other document types with associated metadata  Hold schema definitions in a syntax-independent manner - sufficient information must be held in the registry to create the component from metadata  Metadata to be supported will vary according to the three document types (schema, schema component or other) and will be a subset of that defined in the UK e- GMS  Search on certain metadata information and extract all matching schemas, components or other documents  Construct schemas from components

24 © 2004 Boynings Later Phases  Further metadata mappings  More emphasis on semantic content  The ability for registries to inter- operate  Consideration of mapping data via the ccRIM  More security features

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