institutional barriers to the irish spatial data exchange project john evans, coastal atlases...
TRANSCRIPT
Institutional Barriers to the Irish Spatial Data Exchange
Project
John Evans, Coastal Atlases Workshop, 26th July 2006
(26 Slides)
“If you don’t know where you are, a map won’t help”
- Watts Humphrey
(But a signpost might)
What is the ISDE?A data discovery service with
multiple entry points and multiple nodes
ReachLiteMessage Hub
MIEPADCMNR/GSICMRC (UCC)
OGC CSW 2.0Catalogue
Application Profile
GSI
Union Search Platform (USP)
IB - 1
OB-1
OB-2IB - 2 OB-3 OB-4
OB-5
IB - 3
IB - 4
IB - 5
OB-6
IB - 6
Irish Spatial Data Exchange – Software Architecture
Heterogeneous Databases
Message Routing
Relax NG/W3C XML SchemaService Abstraction
Web ServiceSource Wrapper
Query Extender
Query Processor
Source Identification
Web ServiceSource Wrapper
Web ServiceSource Wrapper
Web ServiceSource Wrapper
Data Access Services
User ServicesInterface
(LGCSB)
CSW getRecords XML 1.0 Envelope
MIDA
Query Extender
MDO
Query Extender
EPA
Query Extender
1
4
3
2
ISO19115(19139)/19119
XML data binding - encodingApplication-layer protocol: HTTP/1.1
Broker/Mediator (XML)
USP Web Service
CSW getRecords XML 1.0 Envelope
Data Source ProfilesUDDI
Why build the ISDE?
Where can I get data on offshore mineral deposits?
The Marine Institute?The Geological Survey?
The Environmental Protection Agency?DCMNR?
Third Level?
“Lets build a portal for Marine Data Sets”!
- They assume you know where they are- Sometimes people say portal and mean repository- Harvesting is a costly process- Meta-data records can have multiple instances- Different levels of information quality exist across portals
The Trouble with portal sites . . .
- Allowing people access meta-data via the routes they expect- Placing the burden of maintenance on the organisation that generates the data (with exceptions)- Minimising and spreading the operational costs- Providing a mechanism so meta-data records do not need to be duplicated- Working to simple and agreed standards
The ISDE aims to overcome these problems by:
So what are the barriers?
1. The question of control2. Funding3. Standards and Infrastructure4. Ability to participate5. Technologies
- By allowing multiple entry points the ability of a portal to generate revenue is removed
- Not all organisations have the same agenda in this area (or the same mandate)
- Some organisations have greater influence
The Question of Control
- Most agencies are single mandate and budget constrained
- A project like the ISDE required contributions from multiple sources – without the promise of control
- There are very few sources of inter-agency funding
Funding
The Exception. . .
- There are lots of standards!
- Very few mandated for use
- ISDE faced with a choice, define ourselves or wait for standards
Lack of Standards
- An infrastructure of sorts does exist – the PSB
- Not intended for this kind of traffic!
Lack of Infrastructure
- Available meta-data in suitable formato Meta Data just isn’t sexy to IT Managers
- A suitable infrastructure o CSW2.0 ready services
Readiness of target participants
- This actually is not much of an issue
- What is an issue is the perception that technologies cannot inter-marry
- Addressing this was a specific objective of the ISDE
Competing Technologies
Current Status
Website Active(www.isde.ie)
Search in “Beta” Release
ISDE Interoperability Guidelines Published
Where next?
- Local Branding
- Reach Integration
- Data Delivery
- More partners
