Researchr is a web site for finding, collecting, sharing, and reviewing scientific publications, for researchers by researchers.
Sign up for an account to create a profile with publication list, tag and review your related work, and share bibliographies with your co-authors.
Paolo Atzeni, Nicola M. Morfuni. Functional Dependencies and Constraints on Null Values in Database Relations. Inf. Comput., 70(1):1-31, July 1986.
Abstract is missing.