Open data is available as a tool for Startup Weekend Aarhus 2015

09/29/2015 | By Mette-Marie Rathmann Erenskjold

This post originally appeared on

What makes open data ‘open’ and what kind of data are we talking about?

Let’s find out…

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‘Open data is data that can be freely used, re-used and redistributed by anyone - subject only, at most, to the requirement to attribute and sharealike’

Basically it’s data or information that anyone can access, use and share. Open data should be presented in a structured format and has to be availabe and consistente, so it can be easily processed and analised by people.

To better define Open Data we should look to these three importante points:

- Availability and Access: The data we are talking about must be available as a whole and in a modifiable and convenient form.

- Re-use and distribution: The data must be given under these two conditions, ‘re-use’ and ‘distribution’ in order to intermix with other datasets.

- Universal Participation: One of the conditions of open data is that it should be used by everyone without any kind of discrimination against people, groups, or fields of interest.

So when we talk about Open data we always should to talk about interoperability. Interoperabilitly is the ability of systems or organizations to work together and this is essential to build large and complex systems. Data is one piece of “open” material that can be freely combined with other “open” material. This interoperability is the key to understand the practical advantages of “openness”: the capacity to combine different datasets together and thereby to develop more and better products and services.

Open data requires a license so we can actually call it ‘open’ data. Without a license, that data can’t be reused. This license means that whoever uses the data will have an attribution, which means that any individual, organization or business must have credit when publishing this data.

Also, when people mix data with another data, they have also to release the results as open data. We call that ‘share-alike’.

Take a look at the vídeo below so you can better understand the concept and the benefits of open data for our society:

Or read about how to use open data (danish website):

Get the chance to use open data! Buy your ticket for Startup Weekend now: