Beyond Databases, Architectures and Structures 11th International Conference, BDAS 2015, Ustroń, Poland, May 26-29, 2015, Proceedings - Kozielski, Stanisław; Mrozek, Dariusz; Kasprowski, Paweł; Małysiak-Mrozek, Bożena; Kostrzewa, Daniel (Springer International Publishing : Imprint: Springer, 2015)