The Data Science Body of Knowledge (DS-BoK) is based on overview and analysis of existing bodies of knowledge that are relevant to intended frameworks for Data Science and required to fulfil identified in CF-DS competences and skills. The intended EDSION framework comprising of mentioned above components will provide a guidance and a basis for universities to define their Data Science curricula and courses selection, on one hand, and for companies to better define a set of required competences and skills for their specific industry domain in their search for Data Science talents, on the other hand. The DS-BoK definition is based on the proposed CF-DS that defines the five groups of competences for Data Science that include the commonly recognised groups Data Analytics, Data Science Engineering, Domain Knowledge (as defined in the NIST definition of Data Science) and extends them with the two new groups Data Management and Scientific Methods (or Business Process management for business related occupations) that are recognised to be important for a successful work of Data Scientist but are not explicitly mentioned in existing frameworks.