Brussels / 31 January & 1 February 2026

schedule

Databases


09 10 11 12 13 14 15 16 17 18
Saturday PostgreSQL and MySQL, Two Databases, Three Perspectives
"Drop-in Replacement": Defining Compatibility for Postgres and MySQL Derivatives
Jack of all trades: query federation in modern OLAP databases
Cracking Down the Code: What Really Happens When You Run a SELECT?
Server, Storage Engine, Protocol, Client: Suspects of a MySQL Performance Mystery
Real-Time AI Powered by RonDB
DuckDB in the Cloud: A Simple, Powerful SQL Engine for Your Lakehouse
Cube, dbt and Grafana: the OSS stack that blends Data Analytics with Observability data
Data on Kubernetes / stateless storage
Delegating SQL Parsing to PostgreSQL
Replicating Transactional Databases to ClickHouse : Transaction Log Analysis and Time Travel
You do not need an ORM
Working with Filesystem in Time Series Database
Contributing to MariaDB & Postgres
Magical Mystery Tour: A Roundup of Observability Datastores
Multi writer CDC Challenges
Inverted database indexes: The why, the what, and the how.
Apache Arrow, Hostage Negotiator: Revisiting the case for Client Protocol Redesign
From Disks to Distributed: Our Journey of Database Evolution in the Cloud
Federating Databases with Apache DataFusion: Open Query Planning and Arrow-Native Interoperability
LSM vs. B‑Tree: RocksDB and WiredTiger for Cloud‑Native Distributed Databases
How to Prevent Your AI from Returning Garbage: It Starts and Ends with Data Engineering

Read the Call for Papers at https://fosdem-databases-devroom.github.io/.

The purpose of this devroom is to discuss developing databases that can meet the demands of modern applications. Instead of focusing on a single technology or community, our goal is to bring open source database communities and developers together to share their experience, learn from their work, and foster collaboration on challenges ahead.
Event Speakers Start End

Saturday

  PostgreSQL and MySQL, Two Databases, Three Perspectives
Rohit Nayak, Shlomi Noach, Ben Dicken, Pep Pla 10:30 11:20
  "Drop-in Replacement": Defining Compatibility for Postgres and MySQL Derivatives
Jimmy Angelakos, Daniël van Eeden 11:25 11:50
  Jack of all trades: query federation in modern OLAP databases
Nicoleta Lazar 11:55 12:15
  Cracking Down the Code: What Really Happens When You Run a SELECT?
Charly Batista 12:20 12:40
  Server, Storage Engine, Protocol, Client: Suspects of a MySQL Performance Mystery
Vitor Oliveira 12:45 13:05
  Real-Time AI Powered by RonDB
Mikael Ronström 13:10 13:15
  DuckDB in the Cloud: A Simple, Powerful SQL Engine for Your Lakehouse
Gábor Szárnyas, Guillermo Sanchez 13:15 13:20
  Cube, dbt and Grafana: the OSS stack that blends Data Analytics with Observability data
Sam Jewell 13:20 13:25
  Data on Kubernetes / stateless storage
Matthias Crauwels 13:25 13:30
  Delegating SQL Parsing to PostgreSQL
Greg Potter 13:35 13:55
  Replicating Transactional Databases to ClickHouse : Transaction Log Analysis and Time Travel
Arnaud Adant 14:00 14:20
  You do not need an ORM
Giacomo 14:25 14:45
  Working with Filesystem in Time Series Database
Aliaksandr Valialkin 14:50 15:10
  Contributing to MariaDB & Postgres
Kevin Biju, Georgi Kodinov 15:15 15:40
  Magical Mystery Tour: A Roundup of Observability Datastores
Josh Lee 15:45 16:05
  Multi writer CDC Challenges
Sunny Bains 16:10 16:30
  Inverted database indexes: The why, the what, and the how.
Robert Schulze 16:35 16:55
  Apache Arrow, Hostage Negotiator: Revisiting the case for Client Protocol Redesign
Matthew Topol 17:00 17:20
  From Disks to Distributed: Our Journey of Database Evolution in the Cloud
Thor 17:25 17:45
  Federating Databases with Apache DataFusion: Open Query Planning and Arrow-Native Interoperability
Michiel De Backker, Ghasan Mohammad (hozan23) 17:50 18:10
  LSM vs. B‑Tree: RocksDB and WiredTiger for Cloud‑Native Distributed Databases
Franck Pachot 18:15 18:35
  How to Prevent Your AI from Returning Garbage: It Starts and Ends with Data Engineering
Matt Yonkovit ( The Yonk ) 18:40 19:00