public MixedSets(QuestionSets parent) : base("Isnull(QuestionTypeId, -1)=-1", "Mixed", parent) { }
public VerbalSets(QuestionSets parent) : base("QuestionTypeId=" + (int)QuestionType.Type.Verbal, "Verbal", parent) { }
public QuantitativeSets(QuestionSets parent) : base("QuestionTypeId=" + (int)QuestionType.Type.Quantitative, "Quantitative", parent) { }