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-The full schema for Photos 4 databases can be found [here](https://github.com/RhetTbull/osxphotos/wiki/Photos-4-database-schema).
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+The full schema for Photos 4 databases can be found [here](https://github.com/RhetTbull/osxphotos/wiki/Photos-4-database-schema).
+
+### Albums
+
+#### Album Sort Order
+Sort order of photos in albums is not yet supported by `osxphotos`. The sort order appears to be in table `RKCustomSortOrder`.
+
+The highlighted rows in screenshot below show 4 photos in an album with default sort order. Note the `orderNumber` column uses a similar scheme as in Catalina (start at 1024 and increment by 2^10). `containerUuid` is the album UUID (`RKAlbum.uuid`) and `objectUuid` is the photo UUID (`RKVersion.uuid`).
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+
+In screenshot below, I manually re-sorted the images, moving the last image (uuid = 6bxcNnzRQKGnK4uPrCJ9UQ) to the beginning of the album. Note it's `orderNumber` changed from 4096 to 1536, placing it first in the album.
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