Leader of the group Database Architectures: Stefan Manegold.

We, the Database Architectures (DA) research group of CWI, are well known as a leading data systems research group, active in the broad area of analytical database management systems. Our research group has a strong international reputation in academia and industry for pioneering column store technology, fast compression methods, vectorized query execution, indexes for interactive data analysis, and analytical in-process database systems. We have spawned multiple spin-off companies (Data Distilleries, VectorWise, MonetDB Solutions, and DuckDB Labs). We pride ourselves on revealing the real problems in our discipline and coming up with revolutionary solutions that are frequently ahead of their time.




No vacancies currently.


CWI PhD graduate founded record IPO company Snowflake

CWI PhD graduate founded record IPO company Snowflake

Data-warehouse company Snowflake went public this week, reaching an extraordinary market value of $70.4 billion, the largest IPO for a software company ever. Snowflake offers cloud-based data warehousing, whose data storage and query engine contain techniques pioneered in CWI’s Data Architectures group. One of the PhD graduates who developed that technology, former CWI researcher Marcin Żukowski, is co-founder of Snowflake.

CWI PhD graduate founded record IPO company Snowflake - Read More…

Integrating data science and relational systems

Integrating data science and relational systems

Data scientists have largely overlooked relational database systems, even though these could greatly help their research. The systems did not gain traction, because combining them with databases proved to be slow and cumbersome. Now CWI researcher Mark Raasveldt bridges that gap. In his thesis, he proposes several novel techniques that make database management systems easier to use and more efficient.

Integrating data science and relational systems - Read More…

Current events

CIDR 2023

  • 2023-01-08T00:00:00+01:00
  • 2023-01-11T23:59:59+01:00
January 8 Sunday

Start: 2023-01-08 00:00:00+01:00 End: 2023-01-11 23:59:59+01:00

Amsterdam City Centre, Mövenpick Hotel

CIDR 2023

January 8-11, 2023 Amsterdam, Netherlands


The Conference on Innovative Data Systems Research (CIDR) is a systems-oriented conference, complementary in its mission to the mainstream database conferences like SIGMOD and VLDB, emphasizing the systems architecture perspective. CIDR was run every two years starting 2003, becoming the premier conference for practical data systems work. From 2020 on, the conference is organized every year, alternating between Amsterdam and the USA. The venue of the conference is the Mövenpick hotel on the waterfront of the Amsterdam city center.
The CIDR program consists of single-track keynote, paper and demo presentations. There are also evening sessions, including a lively gong show, and plenty of time for interaction among the delegates, who are researchers and practitioners from both academia and industry. CIDR encourages papers about innovative and risky data management system architecture ideas, systems-building experience and insight, resourceful experimental studies, and provocative position statements. Papers are encouraged to present novel approaches to data systems architecture and usage, to inspire discussions on the latest innovative and visionary ideas in the field. Authors are encouraged to submit their best systems work, and are limited to submit at most two papers.

Conference Officers

General Chairs

  • Anastasia Ailamaki, EPFL
  • Peter Boncz, CWI

Program Committee Chairs

  • Fatma Ozcan, Google
  • Thomas Neumann, TUM
  • Carlo Curino, Microsoft


Local Arrangement Chair

  • Stefan Manegold, CWI

Website Chair

  • Ziawasch Abedjan, Leibniz University Hannover

Gong Show Master

  • Andy Pavlo, CMU


Associated Members



Current projects with external funding

  • RelationalAI-CWI Research Agreement ()
  • Actian Research Grant II (ACTIAN II)
  • Cross-Industry Predictive Maintenance Optimization Platform (CIMPLO)
  • Databricks CWI Research Agreement (Databricks)
  • Databricks III
  • Lokale Digitale Competentie centra (DCC) (DCC-NWO-I)
  • Facebook Research Grant (Facebook)
  • Velox Optimizations and supporting new file formats (Meta)
  • Research agreeement CWI - Databricks - vervolg contract (None)
  • Responsible Decentralized Data Architecture (RDDA)
  • RelationalAI-CWI Research Grant Agreement (RelationalAI)
  • Structure-aware Querying & Information Retrieval on Evolving Large Graphs (SQIREL-GRAPHS)

Related partners

  • Actian Corporation
  • Databricks
  • LIACS Institute
  • Neo Technology AB
  • OBI4wan B.V.
  • RelationalAI
  • Spinque
  • WizeNoze B.V.
  • Facebook
  • Meta Platforms Inc