******************************* Open Journal of Databases (OJDB) (http://www.ronpub.com/OJDB) ******************************* ========= Call for Papers ======== ** About OJDB Open Journal of Databases (OJDB), an open access online journal, publishes original and creative research results on databases. OJDB distributes its articles under the open access model. All articles of OJDB are fully open access and online available to readers free of charge. Accepted manuscripts are published online immediately. OJDB aims to provide a forum for sharing and exchanging ideas, experiences and research results among scientists and practitioners of databases. OJDB publishes regular research papers, short communications, reviews and visionary papers in all aspects of databases. There is no restriction on the length of the papers. ** Scope OJDB welcomes original, high-quality papers in all traditional and emerging areas of database research. ** Editor-in-Chief: Fabio Grandi, University of Bologna, Italy ** Editorial Board: Mirian Halfeld Ferrari Alves, Universite d'Orleans, France Mithun Balakrishna, Lymba Corporation, USA Jorge Bernardino, CISUC-Polytechnic Institute of Coimbra, Portugal Nikos Bikakis, University of Ioannina, Greece Carlos Pampulim Caldeira, University of Evora, Portugal Barbara Catania, University of Genova, Italy En Cheng, University of Akron, USA Eliseo Clementini, University of L'Aquila, Italy Jerome Darmont, Universite de Lyon, France Bipin C. Desai, Concordia University, Canada Sven Groppe, University of Luebeck, Germany Le Gruenwald, University of Oklahoma, USA Giovanna Guerrini, Universita' di Genova, Italy Abdessamad Imine, Lorraine University, France Peiquan Jin, University of Science and Technology of China, China Verena Kantere, University of Geneva, Switzerland Carsten Kleiner, University of Applied Sciences and Arts Hanover, Germany Josep L. Larriba-Pey, DAMA-UPC, Barcelona, Spain Daniel Lemire, Universite du Quebec, Canada Jan Lindstroem, SkySQL, Finland Chuan-Ming Liu, National Taipei University of Technology, Taiwan Pericles Loucopoulos, University of Manchester, United Kingdom Riccardo Martoglia, University of Modena and Reggio Emilia, Italy Cedric du Mouza, Conservatoire National des Arts et Metiers, France Eric Pardede, La Trobe University, Australia Elaheh Pourabbas, National Research Council, Italy Ismael Sanz, Universitat Jaume I, Spain Klaus-Dieter Schewe, Software Competence Center Hagenberg (SCCH), Austria Theodoros Tzouramanis, University of the Aegean, Greece Marco Vieira, University of Coimbra, Portugal Yingwei Wang, University of Prince Edward Island, Canada John (Junhu) Wang, Griffith University, Australia ** Recently Published Papers: "Branch-and-Bound Ranked Search by Minimizing Parabolic Polynomials" (http://www.ronpub.com/ojdb/OJDB_2020v7i1n02_Poensgen.html) Peter Poensgen, Ralf Moeller "Quasi-Convex Scoring Functions in Branch-and-Bound Ranked Search" (http://www.ronpub.com/ojdb/OJDB_2020v7i1n01_Poensgen.html) Peter Poensgen, Ralf Moeller "Multi-Shot Stream Reasoning in Answer Set Programming: A Preliminary Report" (http://www.ronpub.com/ojdb/OJDB_2019v6i1n04_Obermeier.html) Philipp Obermeier, Javier Romero, Torsten Schaub "Ontology-Based Data Access to Big Data" (http://www.ronpub.com/ojdb/OJDB_2019v6i1n03_Schiff.html) Simon Schiff, Ralf Moeller, Oezguer L. Oezcep "Provenance Management over Linked Data Streams" (http://www.ronpub.com/ojdb/OJDB_2019v6i1n02_QianLiu.html) Qian Liu, Marcin Wylot, Danh Le Phuoc, Manfred Hauswirth "Effectiveness of NoSQL and NewSQL Databases in Mobile Network Event Data: Cassandra and ParStream/Kinetic" (http://www.ronpub.com/ojdb/OJDB_2018v5i1n01_Kotiranta.html) Petri Kotiranta, Marko Junkkari "Machine Learning on Large Databases: Transforming Hidden Markov Models to SQL Statements" (http://www.ronpub.com/ojdb/OJDB_2017v4i1n02_Marten.html) Dennis Marten, Andreas Heuer "An NVM Aware MariaDB Database System and Associated IO Workload on File Systems" (http://www.ronpub.com/ojdb/OJDB_2017v4i1n01_Lindstroem.html) Jan Lindstroem, Dhananjoy Das, Nick Piggin, Santhosh Konundinya, Torben Mathiasen, Nisha Talagala, Dulcardo Arteaga "XML-based Execution Plan Format (XEP)" (http://www.ronpub.com/ojdb/OJDB_2016v3i1n03_Koch.html) Christoph Koch "Runtime Adaptive Hybrid Query Engine based on FPGAs" (http://www.ronpub.com/ojdb/OJDB_2016v3i1n02_Werner.html) Stefan Werner, Dennis Heinrich, Sven Groppe, Christopher Blochwitz, Thilo Pionteck ** Indexing: OJDB is indexed by DBLP and other bibliographic databases and libraries, and a full digital copy of the content of this journal is permanently preserved in the German National Library (http://www.ronpub.com/OJDB/indexing). ** Open-Access Publication Fees: All articles of OJDB are fully open access and online available to readers free of charge. In order to support open access, OJDB has to charge a one-time publication fee for each accepted article. Please visit the journal webpage for more information ( https://www.ronpub.com/OJDB/publication-fees ). ** Submission & Preparation OJDB welcomes submissions at any time. The preparation and submission of manuscripts should follow the author guidelines http://www.ronpub.com/OJDB/author-guidelines. ************************************************ OJDB Editorial Office RonPub UG (haftungsbeschraenkt), Germany Web: www.ronpub.com/ojdb Email: ojdb@ronpub.com