diff --git a/Photos-version-5-database.md b/Photos-version-5-database.md
index 9e8364a..0800e6d 100644
--- a/Photos-version-5-database.md
+++ b/Photos-version-5-database.md
@@ -1,3 +1,20 @@
 The full schema of the Photos 5 database is available [here](https://github.com/RhetTbull/osxphotos/wiki/Photos-5-database-schema).
 
 `PhotosDB._process_database5()` reads the `Photos.sqlite` file to extract all known metadata. 
+
+The primary tables of concern are:
+
+|Table Name|Description|
+|---|---|
+|ZGENERICASSET| |
+|ZADDITIONALASSETATTRIBUTES| |
+|ZPERSON| |
+|ZDETECTEDFACE| |
+|ZGENERICALBUM| |
+|Z_26ASSETS| |
+|ZKEYWORD| |
+|ZASSETDESCRIPTION| |
+|ZUNMANAGEDADJUSTMENT| |
+|ZINTERNRESOURCE| |
+|ZCLOUDMASTER| |
+|ZUNIFORMTYPEIDENTIFIER| |