diff --git a/database.sql b/database.sql
index 2233639..163dd6d 100644
--- a/database.sql
+++ b/database.sql
@@ -10,6 +10,12 @@ CREATE TABLE IF NOT EXISTS "files" (
 	"path" TEXT,
 	PRIMARY KEY("id" AUTOINCREMENT)
 );
+CREATE TABLE IF NOT EXISTS "metadata" (
+	"fid"	INTEGER NOT NULL,
+	"name" TEXT,
+	PRIMARY KEY("fid"),
+	FOREIGN KEY("fid") REFERENCES "files"("id")
+);
 CREATE TABLE IF NOT EXISTS "tags_ties" (
 	"fid"	INTEGER NOT NULL,
 	"tid"	INTEGER NOT NULL,
@@ -19,8 +25,8 @@ CREATE TABLE IF NOT EXISTS "tags_ties" (
 );
 CREATE TABLE IF NOT EXISTS "hashes" (
 	"id"	INTEGER,
-	"md5"	TEXT,
-	"fid"	INTEGER,
+	"md5"	TEXT NOT NULL,
+	"fid"	INTEGER NOT NULL,
 	PRIMARY KEY("id" AUTOINCREMENT),
 	FOREIGN KEY("fid") REFERENCES "files"("id")
 );