/// <summary>
    /// Overload method only used to update loyalty members
    /// </summary>
    /// <param name="membershipclass"></param>
    private static void updateMembership(string membershipclass)
    {
        string SQLSelect = createSelectStringForLoyalty();
        string SQLUpdate = createUpdateString(membershipclass);

        SQLAdapter.updateMembership(SQLSelect, SQLUpdate);
    }
    /// <summary>
    /// Updates employee membership details depending on percentage.
    /// </summary>
    /// <param name="percent">Top percent that needs to be changed</param>
    /// <param name="membershipclass">Membership category to change them too</param>
    private static void updateMembership(string percent, string membershipclass)
    {
        string SQLSelect = createSelectString(percent);
        string SQLUpdate = createUpdateString(membershipclass);

        SQLAdapter.updateMembership(SQLSelect, SQLUpdate);
    }