diff --git a/schema.sql b/schema.sql
index ed2c7db..45c64bb 100644
--- a/schema.sql
+++ b/schema.sql
@@ -65,16 +65,11 @@ CREATE TABLE IF NOT EXISTS distribution (
 	FOREIGN KEY (distributor) REFERENCES distributor (id)
 );
 
-CREATE TABLE IF NOT EXISTS document (
-	id INTEGER AUTO_INCREMENT PRIMARY KEY, -- index
-	type TEXT -- document type
-);
-
 -- part attachments
 CREATE TABLE IF NOT EXISTS attachment (
 	id INTEGER AUTO_INCREMENT PRIMARY KEY, -- index
 	part INTEGER NOT NULL, -- the part
-	type INTEGER, -- attachment document type
+	mime TEXT NOT NULL, -- attachment document type
 	path TEXT NOT NULL, -- the path to the attachment
 	priority INTEGER NOT NULL, -- in which place the attachment should be displayed
 	FOREIGN KEY (part) REFERENCES part (id),