diff --git a/sql/dbschema.sql b/sql/dbschema.sql
index a3e6314..76a850a 100644
--- a/sql/dbschema.sql
+++ b/sql/dbschema.sql
@@ -6,7 +6,6 @@ CREATE TABLE "families" (
   "name" TEXT   -- e.g. KEYone, Motion
 );
 
-
 -- Needs SQLite 3.7 or newer
 INSERT INTO "families" ("name") VALUES
   ("KEYone"),
@@ -19,6 +18,7 @@ CREATE TABLE "models" (
   "name" TEXT   -- e.g. BBB100-1
 );
 
+-- Needs SQLite 3.7 or newer
 INSERT INTO "models" VALUES
   (0, "BBB100-1"),
   (0, "BBB100-2"),
@@ -32,15 +32,26 @@ CREATE TABLE "devices" (
   "name" TEXT   -- e.g. Unlocked USA, Black KEYone
 );
 
+-- Needs SQLite 3.7 or newer
 INSERT INTO "devices" VALUES
   ("PRD-63117-011", 1, "Unlocked EMEA"),
   ("PRD-63116-001", 0, "Unlocked USA")
 ;
 
+-- we only care about the first file for now
+-- a separate "files" table might get introduced later
 CREATE TABLE "updates" (
   "updateId" INTEGER PRIMARY KEY AUTOINCREMENT,
-  "fv" TEXT,       -- version, e.g. AAQ302
-  "sha1" TEXT,     -- SHA1 checksum of file
+  "tv" TEXT,       -- target version, e.g. AAQ302
+  "fv" TEXT,       -- from version (only for OTA)
+  "svn" TEXT,      -- version info from <SVN> field
+  "pubDate" INTEGER,   -- published date
+  "publisher" TEXT,    -- publisher
+  "fwId" TEXT,     -- <FW_ID>
+  "file_id" TEXT,      -- <FILE_ID> of first file
+  "file_name" TEXT,    -- filename of first file
+  "file_size" INTEGER, -- size of first file
+  "file_sha1" TEXT,    -- SHA1 checksum of first file
   "type" TEXT,     -- FULL or OTA
   "note" TEXT,     -- some note for this file (optional)
 );