Haralampos Gavriilidis's Avatar

Haralampos Gavriilidis

@harrygav

Database Systems Researcher at BIFOLD / Technische Universität Berlin. Working on Federated Query Processing and Database Systems Interoperability.

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17.11.2024
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Latest posts by Haralampos Gavriilidis @harrygav

📢📢 VLDB 2027 Shadow PC is here! @vldb.bsky.social
Apply at forms.office.com/e/v1ZmNaPvrn by April 8!
For more info, see vldb.org/2027/shadow-...
Chairs: @zistvan.bsky.social, Tianzheng Wang, Primal Pappachan, & I.

06.03.2026 09:55 👍 2 🔁 1 💬 0 📌 0
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Join us for the next BIFOLD Colloquium with Thomas Dohmke. Title: "The new age of developer AI."

Feb 24, 2026
4 pm
BIFOLD, Franklinstr.28/29, floor 7, FR 701
More: t1p.de/eqnzi

@thomasdohmke.bsky.social : former GitHub CEO, @tuberlin.bsky.social alumnus, co-founder and CEO of @entire.io.

17.02.2026 12:01 👍 3 🔁 1 💬 0 📌 0

VLDB'25 Demo Paper: www.user.tu-berlin.de/harry_g/asse...

AIDB@VLDB'25 Paper: www.vldb.org/2025/Worksho...

CDMS@VLDB'25 Extended Abstract: www.vldb.org/2025/Worksho...

SIGMOD'25 Paper: dl.acm.org/doi/10.1145/...

Project Website: www.polydbms.org

26.08.2025 20:48 👍 2 🔁 0 💬 0 📌 0

All work was done at @bifold.berlin / @tuberlin.bsky.social
and partially supported by @softwarecampus.bsky.social.

26.08.2025 20:48 👍 2 🔁 0 💬 1 📌 0

Based on the PolyDB Project, together with my collaborators Leonhard Rose, Joel Ziegler, Jonathan Gerloff, Benedikt Didrich, Midhun Kaippillil Venugopalan, Kaustubh Beedkar, @matthiasboehm7.bsky.social, and Volker Markl.

26.08.2025 20:48 👍 1 🔁 0 💬 1 📌 0

👉 At the #CDMS Workshop I will give a lightning talk on interoperability and composability in #federated #DataSystems, showing how XDB (our work from #ICDE2023) enables federated query processing and XDBC enables efficient cross-system #DataTransfer.

26.08.2025 20:48 👍 1 🔁 0 💬 1 📌 0

👉 At the #AIDB Workshop Bene will present our work on ADAPT, a data-driven optimizer that automatically tunes transfer parameters to changing environments. With Benedikt Didrich, Vasilis Gkolemis, @matthiasboehm7.bsky.social, and Volker Markl.

26.08.2025 20:48 👍 1 🔁 0 💬 1 📌 0

Step into the cockpit, set the parameters, and win prizes while shielding Earth from meteor strikes. With Joel Ziegler, Midhun Kaippillil Venugopalan, Benedikt Didrich, @matthiasboehm7.bsky.social, and Volker Markl. Thanks to Stefanie Lenk for the awesome graphics!

26.08.2025 20:48 👍 1 🔁 0 💬 1 📌 0
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🚀What do data transfer and space missions have in common?

A lot of parameters you need to tune in complex environments!
👉At #VLDB2025 we will showcase Enter the Warp, an interactive game that turns data transfer into a space mission using XDBC, our work presented at #SIGMOD2025

26.08.2025 20:48 👍 4 🔁 1 💬 1 📌 0

🎧 Sounds interesting? Lets chat next week at @sigmod2025.bsky.social

Paper: dl.acm.org/doi/10.1145/...
Podcast: disseminatepodcast.podcastpage.io/episode/hara...
Project website: www.polydbms.org

20.06.2025 17:53 👍 1 🔁 0 💬 0 📌 0

Work done in collaboration with Kaustubh Beedkar, @matthiasboehm7.bsky.social , and Volker Markl at @bifold.berlin and Technische Universität Berlin, and supported by @softwarecampus.bsky.social.

20.06.2025 17:52 👍 3 🔁 1 💬 1 📌 0

We argue that existing data transfer tools fall short in today's diverse environments. We introduce XDBC, a framework for fast and scalable data transfer across heterogeneous systems and infrastructures, whether you're working with #PostgreSQL, #Pandas, #ApacheSpark, or anything in between.

20.06.2025 17:51 👍 2 🔁 0 💬 1 📌 0
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🚀 📄 Paper and Podcast Drop! 🎙️
Our #SIGMOD2025 paper on #data #transfer was just published on ACM.
Bored to read? The podcast with Jack Waudby on The Disseminate podcast is out too.

20.06.2025 17:51 👍 2 🔁 0 💬 1 📌 0

Paper: ieeexplore.ieee.org/document/101...
Demo: www.vldb.org/pvldb/vol16/...
Project website: www.polydbms.org

11.05.2025 10:16 👍 0 🔁 0 💬 0 📌 0

The XDB research project is a collaboration with Leonhard Rose, Joel Ziegler, Jonathan Gerloff, Benedikt Didrich, Kaustubh Beedkar, and Volker Markl at @bifold.berlin & @tuberlin.bsky.social and supported by @softwarecampus.bsky.social!

11.05.2025 10:15 👍 2 🔁 0 💬 1 📌 0

It was great to get feedback, connect with people from industry, and talk all things #PostgreSQL. #PGConf is such a vibrant community: Thanks to everyone for the engaging discussions!

11.05.2025 09:31 👍 1 🔁 0 💬 1 📌 0

🐘Really enjoyed presenting part of my PhD work (at @bifold.berlin/@tuberlin.bsky.social) on XDB for #decentralized query processing in #federated #databases at @pgconfde.bsky.social!

11.05.2025 09:31 👍 2 🔁 1 💬 1 📌 0
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Thank you to Stefan Halfpap, Haralampos Gavriilidis, Lukas Pirch, and Stephanie Brandl for their excellent tutorials this afternoon at #BIFOLDDay2025.
We look forward to the Spring Reception starting at 4 PM!

@lpirch.bsky.social @stephaniebrandl.bsky.social @harrygav.bsky.social

30.04.2025 14:48 👍 8 🔁 3 💬 1 📌 1

Paper: www.sciencedirect.com/science/arti...

DuckDB Extension: duckdb.org/community_ex...

Core Parser with links to R & Python bindings, and the PostgreSQL extension: github.com/polydbms/she...

18.04.2025 17:44 👍 0 🔁 0 💬 0 📌 0

Work done in collaboration with @elenitz.bsky.social and Volker Markl at the @tuberlin.bsky.social @bifold.berlin and supported by @softwarecampus.bsky.social

18.04.2025 17:43 👍 1 🔁 1 💬 1 📌 0

Kudos to Felix Henze for leading the core parser implementation, Jonas Benn for building the @duckdb.org extension, and Joel Ziegler for the #postgresql extension!

18.04.2025 17:42 👍 0 🔁 0 💬 1 📌 0

I recently joined Jack Waudby on the @disseminate as part of the "DuckDB in Research Podcast" series to talk about SheetReader and our DuckDB community extension.

18.04.2025 17:41 👍 1 🔁 0 💬 1 📌 0

Parsing #Excel #spreadsheets at lightning speed — that’s exactly what we built SheetReader for!

18.04.2025 17:39 👍 7 🔁 2 💬 1 📌 1
PolyDB Project | TU Berlin

Find out more about my project: www.polydbms.org

13.03.2025 17:40 👍 1 🔁 0 💬 0 📌 0

A huge thank you to the Software Campus team Stefan Jazdzejewski, Susanne Kegler, Natalia Teixeira Silva, and Tiziana Maglia for making this program such a valuable experience and Holger Konle from DLR Projektträger for his invaluable support throughout the project!

13.03.2025 17:39 👍 1 🔁 0 💬 1 📌 0

Through my project #PolyDB, I had the chance to lead a team of amazing research assistants, travel to top conferences, and meet incredible people—experiences that wouldn’t have been possible without Software Campus.

13.03.2025 17:39 👍 1 🔁 0 💬 1 📌 0

Being part of Software Campus has been an incredible opportunity to bridge academia and industry, with great leadership trainings and 100k€ funding for research, travel, and equipment—I highly recommend applying if you're a PhD student in Germany! 🚀

13.03.2025 17:39 👍 5 🔁 1 💬 1 📌 0

Please help spread the word by reposting!

We've just created the official DEEM Workshop account: @deem-workshop.bsky.social

07.02.2025 21:10 👍 6 🔁 5 💬 0 📌 0
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🌟 Promoting diversity, EDBT/ICDT 2025 🇪🇸 awards 5 students free conference registration 🌟

📢 Call: edbticdt2025.upc.edu?contents=di_...
🏆Awards: 5 grants for free registration (travel not included)
👉Apply here: forms.gle/6MefnqBHo3pF...

📅 Apply by: Feb 3, 2025
🌈 Results: Feb 14, 2025

Please share 😊

14.01.2025 14:38 👍 4 🔁 3 💬 0 📌 0