diff --git a/Photos-4-database-schema.md b/Photos-4-database-schema.md
index 3342ec0..d9e9f00 100644
--- a/Photos-4-database-schema.md
+++ b/Photos-4-database-schema.md
@@ -1,3 +1,4 @@
+The schema for Photos version 4 databases, as produced by `sqlite3 photos.db ".schema"` is:
 
 ```sql
 CREATE TABLE LiGlobals (modelId integer primary key, keyPath varchar, value varchar, blobValue blob);