C.J. Date, Ronald Fagin
ACM Transactions on Database Systems (TODS)
An elementary proof is presented of an asymptotic estimate for the number (up to isomorphism) of finite relational structures, under a quite general definition of "relational structure". © 1977.
C.J. Date, Ronald Fagin
ACM Transactions on Database Systems (TODS)
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SIGMOD 2008
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ICDT 2010
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