einfache Reservierung möglich

src/main/resources/db/migration/V0001__initial.sql

@@ -9,6 +9,6 @@ create table users (
 
 create table kalendertag (
     id bigint not null primary key,
-    date date not null unique,
-    inoffice_id bigint not null references users
+    day date not null unique,
+    inoffice_id bigint references users
 );