Dagstuhl Manifestos, Vol. 7, Issue 1 ISSN 2193-2433

In April 2016, a community of researchers working in the area of Principles of Data Management (PDM) joined in the Dagstuhl Castle in Germany for a workshop organized jointly by the Executive Committee of the ACM Symposium on Principles of Database Systems (PODS) and the Council of the International Conference on Database Theory (ICDT). The mission of this workshop was to identify and explore some of the most important research directions that have high relevance to society and to Computer Science today, and where the PDM community has the potential to make significant contributions. This report describes the family of research directions that the workshop focused on from three perspectives: potential practical relevance, results already obtained, and research questions that appear surmountable in the short and medium term. This report organizes the identified research challenges for PDM around seven core themes, namely Query Processing at Scale, Multi-model