2 * DB migration from v01 to v02 (firebird)
5 CREATE DOMAIN DM_TARIFF_PERIOD AS VARCHAR(32) NOT NULL
6 CHECK (VALUE = 'month' OR VALUE = 'day');
8 ALTER TABLE tb_tariffs ADD period DM_TARIFF_PERIOD DEFAULT 'month';
12 version INTEGER NOT NULL
15 INSERT INTO tb_info VALUES (1);