namespace
. Every such relationship constitutes a Personal Data Account. In short, PDA encapsulates namespace
and the relationship with 1 external party. Hence, 1 email-person -> 1 PDS -> n
PDA.application-id
. Reference numbers are more for centralised systems to identify unique/individualised records. Because the agreement is written to the owners' PDS databases, an individual HMIC reference number is moot/redundant.