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Illustrations of the Refresh Operation
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Possible Outcomes of a Provisional TransactionFigure 1-1 illustrates what can happen to a provisional transaction before, during, and after a refresh. This illustration shows that there are only three possible outcomes when a provisional transaction is applied at the source (assuming that communication between source and target does not fail during the refresh):
If the transaction applies successfully at the source, but then the refresh does not complete because of a communication failure, the target is correctly updated at the next successful refresh. Cloudsync assures that provisional transactions apply once and only once at the source. Figure 1-1 Possible outcomes of a provisional transaction NOTE: \t Source changes can fail to apply at a target because they violate a target foreign key constraint. You can avoid this situation by designing your publications correctly. See Handling Published Foreign Keys for details. |
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![]() Cloudscape Version 3.6 For information about Cloudscape technical support, go to: www.cloudscape.com/support/.Copyright © 1998, 1999, 2000 Informix Software, Inc. All rights reserved. |