Cardinality of Fields

[blue-j]

I don't see cardinality being called out in the namespace field reference pages.  Am I missing it somehow?  I have to identify cardinality with a ton of fields and can share my data if desired.

From the IPTC:

"Cardinality: how often this property must or may occur in a set of Photo Metadata about an image or in a structure of a metadata property:
1 = one and only one occurrence is mandatory,
0..1 = one occurrence is optional,
0..unbounded = one and multiple occurrences are optional,
1..unbounded = one occurrence is mandatory, multiple occurrences are optional"

-J

[Phil Harvey]

ExifTool currently doesn't enforce strict cardinality in IPTC Photo Metadata, or XMP in general.  That would be a new feature if someone was interested, but enforcing mandatory properties can be problematic.

- Phil

[blue-j]

I'm ok enforcing it outside of Exiftool, but I'm sure it would be very useful to some.  Presumably everyone deploying ET in a serious metadata environment has to enforce cardinality?  I can share the data if you'd like.

- J