Firebird - Expressões Regulares

CREATE domain D_TP_CEP AS VARCHAR(10) character SET UTF8
   CHECK (TRIM(trailing FROM VALUE) similar TO '[0-9][0-9][0-9][0-9][0-9][-][0-9][0-9][0-9]');

CREATE domain D_TP_EMAIL AS VARCHAR(200) character SET UTF8
   CHECK (TRIM(trailing FROM VALUE) similar TO '[a-z]+@{1}[a-z]+.{1}[a-z]+');