-- LegacyWorlds Beta 6
-- PostgreSQL database scripts
--
-- Technology definitions
--
-- Copyright(C) 2004-2010, DeepClone Development
-- --------------------------------------------------------


--
-- Technology lines
--

CREATE TABLE tech.lines(
	name_id			INT NOT NULL PRIMARY KEY ,
	description_id	INT NOT NULL
);

CREATE INDEX idx_lines_description
	ON tech.lines (description_id);

ALTER TABLE tech.lines
	ADD CONSTRAINT fk_lines_name
		FOREIGN KEY (name_id) REFERENCES defs.strings ,
	ADD CONSTRAINT fk_lines_description
		FOREIGN KEY (description_id) REFERENCES defs.strings;
		

--
-- Technology levels
--

CREATE TABLE tech.levels(
	id				SERIAL NOT NULL PRIMARY KEY ,
	line_id			INT NOT NULL ,
	level			INT NOT NULL CHECK( level > 0 ) ,
	name_id			INT NOT NULL ,
	description_id	INT NOT NULL ,
	points			INT NOT NULL CHECK( points > 0 ) ,
	cost			INT NOT NULL CHECK( cost > 0 )
);

CREATE UNIQUE INDEX idx_levels_linelevel
	ON tech.levels (line_id, level);
CREATE INDEX idx_levels_name
	ON tech.levels (name_id);
CREATE INDEX idx_levels_description
	ON tech.levels (description_id);

ALTER TABLE tech.levels
	ADD CONSTRAINT fk_levels_line
		FOREIGN KEY (line_id) REFERENCES tech.lines ,
	ADD CONSTRAINT fk_levels_name
		FOREIGN KEY (name_id) REFERENCES defs.strings ,
	ADD CONSTRAINT fk_levels_description
		FOREIGN KEY (description_id) REFERENCES defs.strings;
