CCADB: What is the difference between “Owner” and “Organization”?

The Included CA Certificate List provides rich, up-to-date, tabulated data about the root certificate authorities that Firefox trusts by default.

But I’m unclear on the semantic difference between the Owner field and the Certificate Issuer Organization field. I see that, most of the time, they broadly refer to “the same entity”… but they’re rarely equal strings. What’s the difference, and what “belongs” in each one?

Is there anywhere I can see the schema or specification which this database was built against?