diff --git a/db/versions/10912-brownCataractarum/00-firstScript.sql b/db/versions/10912-brownCataractarum/00-firstScript.sql
new file mode 100644
index 000000000..51aea42a1
--- /dev/null
+++ b/db/versions/10912-brownCataractarum/00-firstScript.sql
@@ -0,0 +1,12 @@
+ALTER TABLE vn.country 
+    MODIFY COLUMN code varchar(2) NOT NULL;
+
+ALTER TABLE vn.country 
+    ADD CONSTRAINT country_unique UNIQUE KEY (code);
+
+ALTER TABLE vn.transitoryDuaUnified 
+    ADD countryCodeFk varchar(2) DEFAULT 'EC' NOT NULL;
+
+ALTER TABLE vn.transitoryDuaUnified 
+    ADD CONSTRAINT transitoryDuaUnified_country_FK FOREIGN KEY (countryCodeFk) 
+        REFERENCES vn.country(code);