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Merge Replication and restricting the flow of data - clarification needed?


Re: Merge Replication and restricting the flow of data - clarification needed? Hilary Cotter
4/29/2006 5:12:35 PM
sql server replication: I'm chasing the same channels as Paul. I am trying to do more extensive
repro'ing to understand it.

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Merge Replication and restricting the flow of data - clarification needed? Paul Ibison
4/29/2006 8:47:28 PM
In merge replication the flow of data by default is bidirectional between
the publisher and subscriber, however this can be overridden if required. In
SQL Server 2005 there seems to be 3 independant ways this overriding can be
done:

(1) SQL Server Upload Only Conflict Resolver. BOL: "Changes uploaded to the
Publisher are rejected; changes are downloaded to the Subscriber". There is
also the inverse conflict resolver for downloading only. (set at design time
for the publication)

(2) the -EXCHANGETYPE parameter (can be set at run time for the
subscription)

(3) @subscriber_upload_options (set at design time for the publication)

Firstly, I've not used (1) but suggest according to the BOL definition that
that this is something of a misnomer as there can't be any conflicts which
get resolved - it's certainly not the place I'd first look to control data
flow. So, I suggest some sort of article is written to clarify how these
methods interact - when to use each one etc and especially which overrides
which when they are combined. It will probably also be worthwhile explaining
which is likely to be deprecated in the future.

Regards,

Paul Ibison



Re: Merge Replication and restricting the flow of data - clarification needed? Leila
4/30/2006 12:12:28 AM
Thanks Paul,
I used item 2 successfully in SQL2K. What about "Download Only Conflict
Resolve" in SQL2K? It seems to work fine when you want the changes go only
to subscriber, not vice versa. This resolver has not been documented
anywhere. Hilary has promised to tell more about it!



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