CREATE TABLE LegoBrickPriceHistory (
	id 					integer NOT NULL PRIMARY KEY AUTOINCREMENT,
	brick_id 			integer NOT NULL,
	price_point			decimal NOT NULL,
	date_point 			date NOT NULL,
	FOREIGN KEY ( id ) REFERENCES LegoBrick( id )
);

CREATE TABLE LegoSetPriceHistory (
	id 					integer NOT NULL PRIMARY KEY AUTOINCREMENT,
	set_id 				integer NOT NULL,
	price_point			decimal NOT NULL,
	date_point 			date NOT NULL,
	FOREIGN KEY ( id ) REFERENCES LegoSet( id )
);

CREATE TABLE LegoBrickInventory (
	id                  varchar(50) NOT NULL PRIMARY KEY,
	stock				int NOT NULL,
	price				decimal NOT NULL,
	demand_factor		decimal NOT NULL,
	backorder 		  	boolean,
	backorder_stock	  	int,
	last_updated		datetime NOT NULL
	FOREIGN KEY ( id ) REFERENCES LegoBrick( id )
);

CREATE TABLE LegoSetInventory (
	id                  varchar(50) NOT NULL PRIMARY KEY,
	stock				int NOT NULL,
	price				decimal NOT NULL,
	demand_factor		decimal NOT NULL,
	backorder 		  	boolean,
	backorder_stock	  	int,
	last_updated		datetime NOT NULL
	FOREIGN KEY ( id ) REFERENCES LegoSet( id )
);

CREATE TABLE Catagory (
	id                   integer NOT NULL PRIMARY KEY,
	name                 varchar(100)   
);

CREATE TABLE ColourType (
	id                   integer NOT NULL PRIMARY KEY,
	name                 varchar(64)
);

CREATE TABLE LegoBrickColour (
	id                   integer NOT NULL PRIMARY KEY,
	name                 varchar(100),
	hexrgb               varchar(6) NOT NULL,
	col_type             integer,
	FOREIGN KEY ( col_type ) REFERENCES ColourType( id )
);

CREATE TABLE LegoSet (
	id                   varchar(50) NOT NULL PRIMARY KEY,
	catagory             integer,
	name                 varchar(100),
	date_released        date,
	dimensions_x         decimal,
	dimensions_y         decimal,
	dimensions_z         decimal,
	FOREIGN KEY ( catagory ) REFERENCES Catagory( id ),
	FOREIGN KEY ( id ) REFERENCES LegoSetInventory( id )
);

CREATE TABLE LegoBrick (
	id                   varchar(50) NOT NULL PRIMARY KEY,
	name                 text(100) NOT NULL,
	colour               integer,
	catagory             integer,
	weight               decimal,
	dimensions_x         integer,
	dimensions_y         integer,
	dimensions_z         integer,
	date_from            date,
	date_to              date,
	FOREIGN KEY ( colour ) REFERENCES LegoBrickColour( id ),
	FOREIGN KEY ( catagory ) REFERENCES Catagory( id )
);

CREATE TABLE SetDescriptor (
	id                   varchar(50) NOT NULL PRIMARY KEY,
	set_id               varchar(50) NOT NULL,
	brick_id             varchar(50) NOT NULL,
	amount               integer,
	FOREIGN KEY ( set_id ) REFERENCES LegoSet( id ),
	FOREIGN KEY ( brick_id ) REFERENCES LegoBrick( id )
);