CDR

How can I achieve the following with CDR in goldengate Active-Active configuration.

Table 1

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Column1  -- PK

Column2

Column3

Column4 -- UpdateTime

If user at Site A updates Column2  and user at site B updates Column3 corresponding to the same PK at nearly the same time (i.e before one gets replicated to the other).

In this case, I need both the sites to be updated with both the updated column values.

But with the same configuration I should also be able to resolve a situation where two users at different sites update the same column corresponding to the same PK. In this case however, I need it to be resolved using the latest update time i.e Column4.