Try to display simple budget screen

postgres/schema/202112021109_initial.sql

@@ -14,48 +14,42 @@ CREATE TABLE users (
 );
 
 CREATE TABLE user_budgets (
-    user_id uuid NOT NULL,
-    budget_id uuid NOT NULL
+    user_id uuid NOT NULL REFERENCES users (id) ON DELETE CASCADE,
+    budget_id uuid NOT NULL REFERENCES budgets (id) ON DELETE CASCADE
 );
-ALTER TABLE "user_budgets" ADD FOREIGN KEY ("user_id") REFERENCES "users" ("id");
-ALTER TABLE "user_budgets" ADD FOREIGN KEY ("budget_id") REFERENCES "budgets" ("id");
 
 CREATE TABLE accounts (
         id uuid DEFAULT uuid_generate_v4() PRIMARY KEY,
-        budget_id uuid NOT NULL,
+        budget_id uuid NOT NULL REFERENCES budgets (id) ON DELETE CASCADE,
         name varchar(50) NOT NULL
 );
-ALTER TABLE "accounts" ADD FOREIGN KEY ("budget_id") REFERENCES "budgets" ("id");
 
 CREATE TABLE payees (
         id uuid DEFAULT uuid_generate_v4() PRIMARY KEY,
-        budget_id uuid NOT NULL,
+        budget_id uuid NOT NULL REFERENCES budgets (id) ON DELETE CASCADE,
         name varchar(50) NOT NULL
 );
-ALTER TABLE "payees" ADD FOREIGN KEY ("budget_id") REFERENCES "budgets" ("id");
 
 CREATE TABLE category_groups (
     id uuid DEFAULT uuid_generate_v4() PRIMARY KEY,
-    budget_id uuid NOT NULL,
+    budget_id uuid NOT NULL REFERENCES budgets (id) ON DELETE CASCADE,
     name varchar(50) NOT NULL
 );
-ALTER TABLE "category_groups" ADD FOREIGN KEY ("budget_id") REFERENCES "budgets" ("id");
 
 CREATE TABLE categories (
     id uuid DEFAULT uuid_generate_v4() PRIMARY KEY,
-    category_group_id uuid NOT NULL,
+    category_group_id uuid NOT NULL REFERENCES category_groups (id) ON DELETE CASCADE,
     name varchar(50) NOT NULL
 );
-ALTER TABLE "categories" ADD FOREIGN KEY ("category_group_id") REFERENCES "category_groups" ("id");
 
 CREATE TABLE transactions (
     id uuid DEFAULT uuid_generate_v4() PRIMARY KEY,
     date date NOT NULL,
     memo text NOT NULL,
     amount decimal(12,2) NOT NULL,
-    account_id uuid NOT NULL,
-    category_id uuid,
-    payee_id uuid
+    account_id uuid NOT NULL REFERENCES accounts (id),
+    category_id uuid REFERENCES categories (id),
+    payee_id uuid REFERENCES payees (id)
 );
 ALTER TABLE "transactions" ADD FOREIGN KEY ("account_id") REFERENCES "accounts" ("id");
 ALTER TABLE "transactions" ADD FOREIGN KEY ("payee_id") REFERENCES "payees" ("id");