diff --git a/doc/schema.sql b/doc/schema.sql
new file mode 100644
index 0000000..d69e9fe
--- /dev/null
+++ b/doc/schema.sql
@@ -0,0 +1,24 @@
+BEGIN TRANSACTION;
+CREATE TABLE source_files (
+	id		INTEGER PRIMARY KEY,
+	filename	TEXT	UNIQUE COLLATE 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 COLLATE NOT NULL
+);
+CREATE TABLE destination_files (
+	id		INTEGER PRIMARY KEY,
+	filename	TEXT	UNIQUE COLLATE NOT NULL,
+	last_change	INTEGER	NOT NULL DEFAULT (strftime('%s','now')),
+	to_delete	NOT NULL DEFAULT 0,
+	update_needed	NOT NULL DEFAULT 1,
+	FOREIGN KEY(source_file)	REFERENCES source_files(id),
+	FOREIGN KEY(destination)	REFERENCES destinations(id)
+);
+
+COMMIT;