"On Preservation under Homomorphisms and Unions of Conjunctive Queries."

Albert Atserias, Anuj Dawar, Phokion G. Kolaitis (2004)

Details and statistics

DOI: 10.1145/1055558.1055602

access: closed

type: Conference or Workshop Paper

metadata version: 2018-11-14

a service of  Schloss Dagstuhl - Leibniz Center for Informatics