ER-MarkUp/test.erd at master · GnsP/ER-MarkUp · GitHub

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DIAGRAM test;
BEGIN
ENT I{
	ATTR Consciousness;
	ATTR "Knowledge" DERIVED;
	ATTR self KEY;
}

ENT God{
	ATTR "Everything" KEY COMPOSITE{
		ATTR Universe;
		ATTR I KEY;
	}
	ATTR Reality;
}

RELN Conceived 	FROM{ CONNECT I MANY; }	TO { CONNECT God ONE; };
RELN Created FROM{ CONNECT God ONE; } TO { CONNECT I MANY; };

ENT Book{
	ATTR Name;
	ATTR ISBN KEY;
	ATTR Price;
	ATTR Author MULTI;
}

RELN Write FROM { CONNECT I MANY; } TO { CONNECT Book MANY; };
RELN Read FROM { CONNECT I MANY; } TO { CONNECT Book MANY; };

ENT Software{
	ATTR Name;
	ATTR "Written in (Language)" MULTI;
	ATTR "Interface CLI/TUI/GUI" MULTI;
	ATTR Bugs MULTI;
	ATTR Programmer MULTI;
}

RELN Write FROM { CONNECT I ONE; } TO { CONNECT Software MANY; };

END