-- Modify "Chemo" table
ALTER TABLE "public"."Chemo" ADD COLUMN "SrcUnit_Code" text NULL;
-- Modify "Encounter" table
ALTER TABLE "public"."Encounter" DROP CONSTRAINT "fk_Encounter_InsuranceCompany", DROP CONSTRAINT "fk_Encounter_Unit", DROP COLUMN "Unit_Id", DROP COLUMN "InsuranceCompany_Id", ALTER COLUMN "Unit_Code" TYPE character varying(10), ALTER COLUMN "InsuranceCompany_Code" TYPE character varying(20), ADD CONSTRAINT "fk_Encounter_InsuranceCompany" FOREIGN KEY ("InsuranceCompany_Code") REFERENCES "public"."InsuranceCompany" ("Code") ON UPDATE NO ACTION ON DELETE NO ACTION, ADD CONSTRAINT "fk_Encounter_Unit" FOREIGN KEY ("Unit_Code") REFERENCES "public"."Unit" ("Code") ON UPDATE NO ACTION ON DELETE NO ACTION;