Banner Banner

Haralampos Gavriilidis


Technische Universität Berlin
Database Systems and Information Management (DIMA)

Einsteinufer 17, 10587 Berlin


Haralampos Gavriilidis

Doctoral Researcher

Haralampos Gavriilidis is currently pursuing his PhD at DIMA (TU-Berlin), with a focus on efficient cross-database query processing. He received his M.Sc degree at TU Berlin, where he specialized in big (and small) data management systems. During his studies, he worked at DIMA and DFKI as a research assistant, contributing to a compiler infrastructure that enables declarative data analysis on hardware-accelerated query engines. Before his studies at TU Berlin, Harry worked as a full-stack web developer, crafting custom content management systems and web applications.

2022 Software Campus


PolyDB - Efficient and Effective Query Processing for Federated Data Analytics

To create valuable insights, today’s organizations integrate and analyze data from multiple database systems. State of the art approaches for data integration assume that data can be centralized in a single place, the so-called mediator, which also leads to performance bottlenecks. In this project we propose a decentralized query processing model where individual database systems collaboratively carry out data integration and analysis tasks, without requiring a central mediator.

  • Cross-database query Processing
  • Database systems interoperability
  • Query languages

Kaustubh Beedkar, Bertty Contreras-Rojas, Haralampos Gavriilidis, Zoi Kaoudi, Volker Markl, Rodrigo Pardo-Meza, Jorge-Arnulfo Quiané-Ruiz

Apache Wayang: A Unified Data Analytics Framework

November 02 , 2023

Gavriilidis, Haralampos; Rose, Leonhard; Ziegler, Joel; Beedkar, Kaustubh; Quiané-Ruiz, Jorge-Arnulfo; Markl, Volker

XDB in Action: Decentralized Cross-Database Query Processing for Black-Box DBMSes

August 01 , 2023

Yordan Grigorov, Haralampos Gavriilidis, Sergey Redyuk, Kaustubh Beedkar, Volker Markl

P2D: A Transpiler Framework for Optimizing Data Science Pipelines

June 18 , 2023

Haralampos Gavriilidis, Felix Henze, Eleni Tzirita Zacharatou, Volker Markl

SheetReader: Efficient Specialized Spreadsheet Parsing

February 15 , 2023

Haralampos Gavriilidis, Lennart Behme, Sokratis Papadopoulos, Stefano Bortoli, Jorge-Arnulfo Quiané-Ruiz, Volker Markl

Towards a Modular Data Management System Framework

September 09 , 2022

Data Management| Sep 05, 2023

VLDB honors NebulaStream demo

A perfect conclusion for the BIFOLD team at VLDB 2023 in Vancouver: The Nebula Stream team received an honorable mention for the best demo. In total, eleven researchers from the team of BIFOLD director Volker Markl participated in VLDB 2023 in Vancouver, one of the most important database conferences worldwide.

Data Management| Apr 14, 2020

Three papers presented at EDBT 2020

Researchers in TU Berlin’s Database Systems and Information Management (DIMA) Group and DFKI’s Intelligent Analytics for Massive Data (IAM) Group presented three systems papers at EDBT 2020, the 23rd International Conference on Extending Database Technology, held from March 30 to April 2. Originally planned to take place in Copenhagen, Denmark, this year’s EDBT conference was held online instead.