BEGIN TRANSACTION;
CREATE TABLE source_files (
	id		INTEGER PRIMARY KEY,
	filename	TEXT	UNIQUE NOT NULL,
	size		INTEGER NOT NULL,
	hash		TEXT,
	last_change	INTEGER NOT NULL DEFAULT (strftime('%s','now')),
	last_seen	INTEGER	NOT NULL DEFAULT (strftime('%s','now'))
);
CREATE TABLE destinations (
	id		INTEGER PRIMARY KEY,
	path		TEXT	UNIQUE NOT NULL
);
CREATE TABLE destination_files (
	id		INTEGER PRIMARY KEY,
	filename	TEXT	UNIQUE NOT NULL,
	last_change	INTEGER	NOT NULL DEFAULT (strftime('%s','now')),
	to_delete	NOT NULL DEFAULT 0,
	update_needed	NOT NULL DEFAULT 1,
	source_file_id	INTEGER,
	destination_id	INTEGER,
	FOREIGN KEY	(source_file_id)	REFERENCES source_files(id),
	FOREIGN KEY	(destination_id)	REFERENCES destinations(id)
);

COMMIT;
