The open data access movement is associated with the culture of network openness which, since the inception of the Internet, has been one of its key foundation stones. However, it is only for a few years that the idea of open data has found its way to public space, mainstream politics, and the economy.
There are several main reasons for implementing the openness policy. One of these is a need for transparency and improve the functioning of administration and the political system. Another reason is a need to involve the citizens and use data for social change. An equally important factor is the development of knowledge-based economy, which can become more innovative through the use of open data.