Survivorship rules

Survivorship rules define how DinMo chooses the winning value for each field in the golden record.

They are used when several source records are merged into the same dinmo_id and more than one value is available for a golden field.

Available strategies

Strategy	What it does	Use it when
Last non null	Keeps the most recent non-empty value.	The latest known state should win.
Most frequent	Keeps the value observed most often across merged records.	The most consistently observed value is more trusted.
Model Priority Order	Keeps the value from the most trusted model.	One source is more authoritative than the others.

Examples

Field	Suggested strategy
Email	Most frequent or Model Priority Order, depending on source trust.
Phone number	Most frequent or Last non null.
Consent status	Model Priority Order if one source is authoritative.
Last login date	Last non null.

How to choose

Choose the rule that matches the business meaning of the field:

• use Last non null for freshness

• use Most frequent for consistency

• use Model Priority Order for trusted systems of record

Review high-impact fields before activation. See Review and monitor for the validation workflow.