Slet users_threads, ændre users

user_id til cpr_num
slet email og address

aula/schema.sql

@@ -1,12 +1,10 @@
 \i schema_drop.sql;
 
 CREATE TABLE IF NOT EXISTS users (
-    user_id SERIAL PRIMARY KEY,
+    cpr_num INTEGER PRIMARY KEY,
     first_name varchar(64) NOT NULL,
     last_name varchar(64) NOT NULL,
     password varchar(120) NOT NULL,
-    email varchar(64) NOT NULL UNIQUE,
-    address varchar(64) NOT NULL,
     role varchar(64) NOT NULL CHECK ( role in ('student', 'parent', 'teacher') )
 );
 
@@ -26,28 +24,22 @@ CREATE TABLE IF NOT EXISTS messages (
     message_id SERIAL PRIMARY KEY,
     content text NOT NULL,
     thread_id integer REFERENCES threads(thread_id) NOT NULL,
-    author_id integer REFERENCES users(user_id) NOT NULL,
+    author_cpr_num integer REFERENCES users(cpr_num) NOT NULL,
     created_date timestamp NOT NULL DEFAULT now()
 );
 
 CREATE TABLE IF NOT EXISTS posts (
     post_id SERIAL PRIMARY KEY,
     group_id integer REFERENCES groups(group_id) NOT NULL,
-    author_id integer REFERENCES users(user_id) NOt NULL,
+    author_cpr_num integer REFERENCES users(cpr_num) NOt NULL,
     title varchar(64) NOT NULL,
     content text NOT NULL,
     created_date timestamp NOT NULL DEFAULT now()
 );
 
 -- Relationships
-CREATE TABLE IF NOT EXISTS users_threads (
-    user_id integer REFERENCES users(user_id) NOT NULL,
-    thread_id integer REFERENCES threads(thread_id) NOT NULL,
-    PRIMARY KEY (user_id, thread_id)
-);
-
 CREATE TABLE IF NOT EXISTS users_groups (
-    user_id integer REFERENCES users(user_id) NOT NULL,
+    user_cpr_num integer REFERENCES users(cpr_num) NOT NULL,
     group_id integer REFERENCES groups(group_id) NOT NULL,
-    PRIMARY KEY (user_id, group_id)
+    PRIMARY KEY (user_cpr_num, group_id)
 );