code: public boolean supportsBooleanDataType() {
  		if (getConnection() == null)
  			return false; /// assume not;
  		try {
  
  			final Integer fixPack = getDb2FixPack();
  
  			if (fixPack == null)
  				throw new DatabaseException("Error getting fix pack number");
  
  			return getDatabaseMajorVersion() > 11
  					|| getDatabaseMajorVersion() == 11 && getDatabaseMinorVersion() >= 1 && fixPack.intValue() >= 1;
  
  		} catch (final DatabaseException e) {
  			return false; // assume not
  		}
  	}
docs: boolean data type column are allowed for versions >= 11.1.1.1
  @return