  The q-classical orthogonal polynomials of the q-Hahn Tableau are
characterized from their orthogonality condition and by a first and a second
structure relation. Unfortunately, for the q-semiclassical orthogonal
polynomials (a generalization of the classical ones) we find only in the
literature the first structure relation. In this paper, a second structure
relation is deduced. In particular, by means of a general finite-type relation
between a q-semiclassical polynomial sequence and the sequence of its
q-differences such a structure relation is obtained.
