Added some more SQL files for later use. The world Iminiru already uses this structure.

sql/planes.sql

@@ -0,0 +1,5 @@
+CREATE TABLE planes (
+	id integer primary key,
+	name varchar(40) not null unique
+);
+

sql/planets.sql

@@ -0,0 +1,11 @@
+CREATE TABLE planets (
+	id integer NOT NULL PRIMARY KEY,
+	name varchar(40) NOT NULL UNIQUE
+);
+
+CREATE TABLE planet_planes (
+	planet_id integer NOT NULL REFERENCES planets(id),
+	plane_id integer NOT NULL REFERENCES planes(id),
+	UNIQUE (planet_id, plane_id)
+);
+

sql/rooms.sql

@@ -0,0 +1,26 @@
+CREATE TABLE directions (
+	id integer NOT NULL PRIMARY KEY,
+	short_name varchar(2) NOT NULL UNIQUE,
+	name varchar(10) NOT NULL UNIQUE
+);
+
+CREATE TABLE areas (
+	id integer NOT NULL PRIMARY KEY,
+	name varchar(50) NOT NULL
+);
+
+CREATE TABLE rooms (
+	id integer NOT NULL PRIMARY KEY,
+	area integer NOT NULL REFERENCES areas(id),
+	name varchar(50) NOT NULL,
+	distant_description text,
+	close_description text NOT NULL,
+	UNIQUE (area, name)
+);
+
+CREATE TABLE room_exits (
+	room_id integer NOT NULL REFERENCES rooms(id),
+	direction integer REFERENCES directions(id),
+	other_side integer NOT NULL REFERENCES rooms(id),
+	PRIMARY KEY (room_id, direction)
+);