Call ApplyUpdates to post pending cached updates for a specific set of open datasets to the database server. ApplyUpdates is only meaningful if the CachedUpdates property of a specified dataset is true. 

DataSets is a list of dataset names specifying the datasets for which to post pending updates. DataSets need not list every currently open dataset. For each listed dataset ApplyUpdates calls the dataset's ApplyUpdates and CommitUpdates methods to post that dataset's pending cached updates.