Perfect error-correcting databases

Research output: Article

14 Citations (Scopus)


An n×m matrix is called a t-error-correcting database if after deleting any t columns one can still distinguish the rows. It is perfect if after omitting any t+1 columns two identical rows are obtained. (Stating with another terminology, the system of minimal keys induced by A is the system of all (n-t)-element subsets of an n-element set.). Let ft(n) denote the minimum number of rows in a perfect t-error-correcting database of length n. We show that f2(n)=Θ(n2), and in general Ω(n(2t+1){plus 45 degree rule}3)≤ft(n)≤O(nt) for t≥3, whenever n→∞.

Original languageEnglish
Pages (from-to)171-176
Number of pages6
JournalDiscrete Applied Mathematics
Issue number2
Publication statusPublished - aug. 1990

ASJC Scopus subject areas

  • Discrete Mathematics and Combinatorics
  • Applied Mathematics

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