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Rae Knowler
February 12, 2015
Programming
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480
CKAN
An introduction to the open data management system, CKAN.
Rae Knowler
February 12, 2015
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Transcript
Rae Knowler Liip Techtalk, 12th February 2015 1
What is CKAN? 2
CKAN is a powerful data management system that makes data
accessible – by providing tools to streamline publishing, sharing, finding and using data. ckan.org/ 3
OGD@Bund (http://opendata.admin.ch) 4
Python backend, JavaScript frontend - Framework: Pylons - ORM: SQLAlchemy
- Database engine: PostgreSQL - Search: Solr - Templates: Jinja2 5 Technical basis
What is Open Data? 6
Data ... 7 - any kind - from governments -
from research and science - from businesses - ...
… that's Open 8 - accessible - free - reusable
/ remixable
The Five Stars of Open Data 9 Tim Berners-Lee (image
source)
10 Andreas Amsler (image source)
Why use CKAN? 11
Well, what happens when you don't? 12 - "If only
we could get the statistics for this…" - "Not another scanned-in PDF!" - "Do you have the hard drive with our results on it? … No, the other hard drive?"
CKAN lets you ... - upload any kind of file
- from anywhere - with a sensible metadata system - track metadata history - publish data, easily - preview it - share it 13
Who uses CKAN? 14
The Natural History Museum, UK (http://www.nhm.ac.uk/research- curation/research/informatics/creating-digital-infrastructure-science/data-portal/index.html) 15
data.gov.uk 16
CKAN features 17
Open Source - No tool lock-in - No need to
rely on the core devs for features - All the other advantages of Open Source! 18
Federation of data sources - Federation of data sources -
Can store data within CKAN itself - Search all the databases! 19
Super searching - Solr for full-text search - Facetted search
- Tags and groups for datasets - Related material 20
Groups and organisations - Organise datasets by source and topic
- Privilege control for users 21
API - RESTful JSON API - Well-documented - All features
of web interface - Access dataset statistics - Get RDF version of the catalogue - CSV / JSON dump of catalogue - ... 22
Plus ... - Responsive design - Data preview - Geospatial
features - Customisable - Extensible 23
CKAN extensions 24
Add comments 25
Google Analytics 26
QA checker (including the 5 stars) 27
Harvesting https://github.com/ckan/ckanext-harvest - Harvest datasets from any CKAN instance -
Basis for further extensions to harvest data from anywhere 28
Harvesting to a local and a central CKAN instance 29
http://extensions.ckan.org/ 30
CKAN at Liip 31
OGD@Bund (http://opendata.admin.ch) 32
Open Data Zürich (https://data.integ.stadt-zuerich.ch/) 33
ORD@CH (http://openresearchdata.ch) 34
The CKAN community 35
The Open Knowledge Foundation - UK-based non-profit organisation - Manages
CKAN development - Employs full-time dev team 36
Everyone else! - Other contributors are welcome - Useful mailing
lists: - https://lists.okfn.org/mailman/listinfo/ckan-dev - https://groups.google.com/forum/#!forum/ckan- global-user-group - Good issues for contribution: - https://github.com/ckan/ckan/labels/Good%20for% 20Contribution 37
CKANCon 2014, Berlin 38
Useful links 39
- http://ckan.org - http://docs.ckan.org/en/latest/ - https://github.com/liip/ckan-vagrant - Vagrant box for
CKAN development 40 Useful Links
Thanks! 41