TY - JOUR TI - Some computational problems related to the functional dependency in the relational datamodel T3 - Acta scientiarum mathematicarum AU - Demetrovics János PY - 1993 LA - English SN - 0001-6969 UR - http://acta.bibl.u-szeged.hu/15413/1/math_057_627-638.pdf ER -