== Processing the Patient Identifer Set during a Load == === Cardinality, with some examples === First of all, this is wrong. Every pid must have a patient_id. {{{ BPt00000040 S0000040 }}} This is acceptable: {{{ BPt00000040 S0000040 }}} The following example is also acceptable, but implies we know the participant is either: * already within the CRC (and that we know the internal identifier = 2) or: * this is a new participant and we are ourselves assigning a new i2b2 internal identifier (= 2) for them. Both situations are ones we can avoid by adopting the approach of the example above, and omitting the HIVE as a source. {{{ 2 BPt00000040 S0000040 }}}