Hey everyone,
Im trying to express following requirements in datomic schema: person may
have many emails, but no two persons should share the same email.
What comes to mind at first:
{:db/ident :person/email
:db/valueType :db.type/string
:db/cardinality :db.cardinality/many
:db/unique :db.unique/identity ; or :db.unique/value, not sure what
is better
}
But documentation [1] states that "only :db.cardinality/one attributes can
be unique". Still this schema is accepted by datomic, and AFAICT works as I
expect.
Could someone clarify why unique is declared to be cardinality/one only?
And what approach better suits to my problem?
Thanks in advance.
[1] http://docs.datomic.com/identity.html#sec-4
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