diff --git a/Photos-version-5-database.md b/Photos-version-5-database.md
index 0800e6d..d65cdb9 100644
--- a/Photos-version-5-database.md
+++ b/Photos-version-5-database.md
@@ -6,15 +6,15 @@ The primary tables of concern are:
 
 |Table Name|Description|
 |---|---|
-|ZGENERICASSET| |
-|ZADDITIONALASSETATTRIBUTES| |
-|ZPERSON| |
-|ZDETECTEDFACE| |
-|ZGENERICALBUM| |
-|Z_26ASSETS| |
-|ZKEYWORD| |
-|ZASSETDESCRIPTION| |
-|ZUNMANAGEDADJUSTMENT| |
-|ZINTERNRESOURCE| |
-|ZCLOUDMASTER| |
-|ZUNIFORMTYPEIDENTIFIER| |
+|ZGENERICASSET|The primary table with information on photo assets containing filename, directory, favorite, created date, etc.|
+|ZADDITIONALASSETATTRIBUTES|Additional info on photos including original name, title, etc.|
+|ZPERSON|Names of persons detected in photos|
+|ZDETECTEDFACE|Faces detected in photos|
+|ZGENERICALBUM|Information about albums|
+|Z_26ASSETS|Needed to join albums to photos|
+|ZKEYWORD|Information about keywords|
+|ZASSETDESCRIPTION|The photo description (e.g. text typed into Photos by the user)|
+|ZUNMANAGEDADJUSTMENT|Information about edited photos|
+|ZINTERNALRESOURCE|Appears to be information on every internal resource used by Photos; used by osxphotos to find which photos are available locally or in iCloud|
+|ZCLOUDMASTER|Information about photos in iCloud; used to determine which photos have been synched to the cloud|
+|ZUNIFORMTYPEIDENTIFIER|Used to determine the UTI (file type) for photos in the library|