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The Hellenic Data Management Symposium (HDMS) is the annual forum for the Greek database community to present and discuss recent advances in the Data Management (DM) field. The 20th HDMS will be held between July 2-3, 2026 in Athens, Greece.

The program will include academic and industry talks, keynotes, panels, research poster sessions, demos, student poster sessions, and other social activities. HDMS does not produce formal proceedings and encourages researchers to submit and present work that has recently appeared in other venues.

This year we plan to have some sessions in English to be inclusive with the foreign students that are part of the Greek database community, accommodate our non greek-speaking participants in general, and enrich our program. So if you can only present in English, you are still very welcome to submit your work.

Conference Format:

To help the Greek community form a consistent corpus of relevant terminology, all accepted papers, must be accompanied by (i) title and (ii) abstract in GREEK. This information is NOT required for submission.

Submissions must be submitted electronically in PDF to: https://cmt3.research.microsoft.com/HDMS2026 (please use the appropriate track based on your submission type)

The Microsoft CMT Service was used for managing the peer-reviewing process for this conference. This service was provided for free by Microsoft and they bore all expenses, including costs for Azure cloud services as well as for software development and support.

TOPICS



We invite submissions to the following two tracks:
(A) Previously-published peer-reviewed papers (long and short papers)
(B) Unpublished papers and abstracts

Specifically:

(A) Previously-published peer-reviewed papers (long and short papers):

All submissions in this category will be automatically accepted after light review (to confirm they satisfy the track requirements) for full, short, or poster presentation, depending on program time constraints. Authors will be asked to enter their preference regarding presentation type in the submission form, but we may not be able to satisfy all requests.


(B) Unpublished papers and abstracts

  1. Novel work and new results that have not been previously published. Submissions in this category are limited to 8 pages in 2-column ACM format. References are excluded from the page count. Shorter papers and demo contributions are welcome. These submissions will be reviewed by the program committee and, if accepted, will be given full, short, or poster presentations, depending on program time constraints. Authors will be asked to enter their preference regarding presentation type in the submission form, but we may not be able to satisfy all requests. Submissions should include a link to an online version of the paper (arXiv, or similar).
  2. 1-page abstracts by undergraduate and post-graduate students. Abstract submissions in this category are limited to 1 page in PDF format, and the lead author should be an undergraduate or postgraduate student. Submissions will be reviewed by the program committee and, if accepted, will be given poster presentations in the program.

For all categories (A-C) topics of interest include any topic, but are not limited to:

Core database technologies (e.g., query processing and optimization, storage and indexing, database concurrency control, OLTP and OLAP processing).

Non-traditional data management architectures (e.g., data stream management, cloud data management, peer-to-peer systems, mobile data management, blockchain databases).

Data management applications (e.g., geographical information systems, data warehouses, social networks, scientific databases, IoT, crowdsourcing).

Models and languages for the management of data (e.g., XML, RDF, probabilistic databases, meta-data management, multi-media, graph data management).

Techniques for high performance and scalability in the management of data (e.g., distributed data processing, hardware accelerators, new hardware technologies).

Confluence of data management with: information retrieval, knowledge management, natural language processing, and data mining.

Data management and analytics for high-dimensional vectors, including time series, data series, and deep embeddings.

Other aspects of modern information systems (e.g., security, privacy, user interfaces, energy use minimization).

VENUE


HDMS 2026 will take place in Athens (July 2nd - July 3rd 2026) at the Harokopio University of Athens, Amphitheater G. Karabatzos. Entrance to the Amphitheater is through the ground floor in the main University building.

IMPORTANT DATES

Submission Deadline: Monday, April 20, 2026 (11:59 pm AoE)
Notification of Acceptance: Monday, May 4, 2026
Symposium Dates: July 2-3, 2026

ORGANIZING COMMITTEE



General Co-Chairs:

Iraklis Varlamis (Harokopio University of Athens, Greece)
Vasilis Efthymiou (Harokopio University of Athens, Greece)

Program Co-Chairs:

Alexandra Meliou (University of Massachusetts, USA)
Themis Palpanas (Paris Cité University, France)

Sponsorships Chair:

Mara Nikolaidou (Harokopio University of Athens, Greece)

Web Chair:

Kostas Mparmparousis (ATHENA Research Center, Greece)

TECHNICAL PROGRAM COMMITTEE

Alex Delis Univ. of Athens
Alexandros Labrinidis University of Pittsburgh
Alexandros Ntoulas University of Athens
Alkis Simitsis Athena Research Center
Anastasia Ailamaki EPFL
Anastasios Gounaris Aristotle University of Thessaloniki
Asterios Katsifodimos TU Delft
Christos Doulkeridis University of Piraeus
Demetris Zeinalipour University of Cyprus
Dimitrios Tsoumakos National Technical University of Athens
Dimitris Papadias HKUST
Dimitris Plexousakis ICS-FORTH
Dimitris Sacharidis ULB
Eleni Tzirita Zacharatou Hasso Plattner Institute (HPI)
Evaggelia Pitoura University of Ioannina
George Konstantinidis University of Southampton
George Papastefanatos ATHENA Research Center
Georgia Koloniari University of Macedonia
Georgia Koutrika ATHENA Research Center
Herodotos Herodotou Cyprus University of Technology
Iraklis Varlamis Harokopio University of Athens
Katerina Doka National Technical University of Athens
Konstantinos Karanasos Meta
Kostas Stefanidis Tampere University
Kyriakos Mouratidis Singapore Management University
Manolis Koubarakis University of Athens, Greece
Michael Vassilakopoulos University of Thessaly, Dept. of Electrical & Computer Eng.
Nikos Mamoulis University of Ioannina
Nikos Pelekis University of Piraeus
Odysseas Papapetrou TU Eindhoven
Panagiotis Karras University of Copenhagen
Panos Chrysanthis University of Pittsburgh
Panos Kalnis King Abdullah University of Science and Technology
Panos Vassiliadis University of Ioannina
Paraschos Koutris University of Wisconsin-Madison
Spiros Skiadopoulos University of the Peloponnese
Stavros Sintos University of Illinois Chicago
Themis Palpanas Université Paris Cité
Timos Sellis Athena Research Center
Vana Kalogeraki Athens University of Economics and Business, Greece
Vasilis Vassalos Athens University of Economics and Business
Vassilis Tsotras UC Riverside
Verena Kantere University of Ottawa
Yannis Kotidis Athens University of Economics and Business
Yannis Theodoridis University of Piraeus
Yannis Tzitzikas FORTH-ICS and Computer Science Department, University of Crete
Yannis Velegrakis Utrecht University

ORGANIZERS

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#HDMS2026

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