This work is about how both private enterprise and government wish to improve their data value and how they deal with this issue. The talk summarizes the way of thinking about Big Data, Open Data and their use by organizations or individuals. Big Data is explained from collecting, storing, analyzing and put in value. This data is collected from numerous sources including sensor networks, government data holdings, company market databases, and public profiles on social networking sites. Organizations use many data analytical techniques to study both structured and unstructured data. Due to the volume, velocity and variety of data, some specific techniques have been developed. MapReduce, Hadoop and other related as RHadoop are trending topic nowadays.
Data which come from government must be open. Every day more and more cities and countries are opening their data. Open Data is then presented as a specific case of public data with a special role in Smartcity. The main goal of Big and Open Data in Smartcity is to develop systems which can be useful for citizens. In this sense RMap (Mapa de Recursos) is shown as an Open Data application, an open system for Madrid City Council, avalaible for smarthphones and totally developed by the researching group G-TeC (www.tecnologiaUCM.es).