homework 6.2: add tasks 3-6

src/homework/06-database/6.2/migration_structure.sql

@@ -0,0 +1,14 @@
+create table orders
+(
+    id serial primary key,
+    name varchar(255),
+    price integer
+);
+
+create table clients
+(
+    id serial primary key,
+    last_name varchar(255),
+    country varchar(255),
+    order_id integer constraint client_order_fk references orders (id) on delete cascade on update no action
+);