# Yannis Ioannidis

> Greek computer scientist

**Wikidata**: [Q62729010](https://www.wikidata.org/wiki/Q62729010)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Yannis_Ioannidis)  
**Source**: https://4ort.xyz/entity/yannis-ioannidis

## Summary
Yannis Ioannidis is a Greek computer scientist and university professor known for his leadership in database research and his role as president of the Association for Computing Machinery (ACM). He is a professor at the National and Kapodistrian University of Athens and an ACM Fellow recognized for his contributions to database systems.

## Biography
- Born: 1959 in Istanbul
- Nationality: Greek
- Education: University of California, Berkeley; National Technical University of Athens; Harvard University
- Known for: Database systems research and leadership in computing
- Employer(s): National and Kapodistrian University of Athens
- Field(s): Computer science, database systems

## Contributions
Yannis Ioannidis has made significant contributions to database systems research, particularly in query optimization and data management. He has published extensively in top-tier conferences and journals, influencing the development of modern database technologies. As president of ACM from 2022 to 2024, he led the world's largest computing society, promoting computing education and research globally. His work has helped shape how large-scale data systems are designed and optimized, impacting both academic research and practical applications in industry.

## FAQs
### Q: What is Yannis Ioannidis known for?
A: He is known for his research in database systems and his leadership as president of the Association for Computing Machinery (ACM).

### Q: Where does Yannis Ioannidis work?
A: He is a professor at the National and Kapodistrian University of Athens.

### Q: What awards has Yannis Ioannidis received?
A: He was named an ACM Fellow in 2004 for his contributions to database systems research.

## Why They Matter
Yannis Ioannidis matters because his research has advanced the fundamental understanding of how databases process and optimize queries, which is essential for modern data-driven applications. His leadership of ACM has helped guide the computing profession through critical challenges, including promoting diversity and addressing ethical concerns in technology. His mentorship of doctoral students has also helped train the next generation of database researchers and practitioners.

## Notable For
- President of the Association for Computing Machinery (ACM) from 2022-2024
- ACM Fellow (2004) for contributions to database systems
- Professor at the National and Kapodistrian University of Athens
- Mentor to numerous doctoral students who became database researchers
- Published extensively in database systems and query optimization

## Body
### Early Life and Education
Yannis Ioannidis was born in 1959 in Istanbul, Turkey. He pursued his higher education across multiple prestigious institutions, earning degrees from the National Technical University of Athens, Harvard University, and the University of California, Berkeley.

### Academic Career
Ioannidis has built his career as a professor at the National and Kapodistrian University of Athens, where he conducts research and teaches in computer science. His academic work focuses on database systems, query optimization, and data management.

### Research Contributions
His research has significantly advanced the field of database systems, particularly in query optimization techniques that improve how databases process complex queries efficiently. This work has practical applications in virtually all modern data systems.

### Professional Leadership
In 2022, Ioannidis became president of the Association for Computing Machinery (ACM), the world's largest computing society. During his presidency, he has worked to advance computing as a science and profession while addressing important issues facing the field.

### Mentorship
Ioannidis has supervised numerous doctoral students at the University of California, Berkeley and other institutions, including notable researchers like Minos Garofalakis and Renée Miller, who have gone on to make their own contributions to computer science.

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## References

1. [Source](https://www.di.uoa.gr/en/highlights/ACMpresident)
2. Mathematics Genealogy Project
3. [Source](https://awards.acm.org/fellows/award-recipients)
4. [Source](https://www.ae-info.org/ae/Member/Ioannidis_Yannis)