Unbound subscriptions consume the data according to the defined filter, regardless of when or in what batch the data was published.

When you select to insert new rows and update the data that exists in the target, you define the update strategy for rows that exist in the target application, either update all existing rows or update only changed rows.

Data Integration Hub

applies the update strategy that you define when the following conditions exist:

No joins are defined for the topic table.
Primary keys are applied to the topic table.

If joins are defined for the topic table,

Data Integration Hub

detects the update strategy based on the joins. If no joins are defined for the topic table and primary keys are applied to the topic table,

Data Integration Hub

applies the update strategy that you define in the subscription delivery options.

If the type of topic to which the subscription subscribes is Full or if the subscription is an unbound subscription, and you choose to insert new rows and with an update changed rows strategy, you can select to delete rows that don't exist in the topic from the target.