Witold Lipski

Witold Lipski Jr. (July 13, 1949 – May 30, 1985) was a Polish computer scientist (habilitation in computer science), and an author of the books ''Combinatorics for Programmers'' (two editions) and (jointly with Victor W. Marek) ''Combinatorial analysis''.

Lipski and his PhD student Tomasz Imieliński worked on the foundations of the theory of incomplete information in relational databases. Provided by Wikipedia