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Aaron, >Note that adding XML as a db communication layer for a blackbox application >is asking for some real overhead issues. I don't want to put words in David's mouth, but since I've done something similar I think I know what he's doing. It's not so much that XML is the data transport layer as it's the data storage layer on the offline application. Datasets have this marvelous ability to serialize themselves to/from and XML stream. And since datasets can have multiple tables and even relationships between the tables you can actually use the dataset as a mini-database. When you're online load up the dataset from the iSeries and serialize it do a local file. When offline simply serialize it in from the local file -- instant offline data access. My biggest concern with using anything other that the Dataset to serialize out the XML in the first place is that you've got to get it right. Simple XML is, um, simple, but throw in several tables, and the relations between them and suddenly that XML gets rather ugly. It's not that it can't be done from RPG -- heck XML is just text -- but if you continue to use .NET to create the XML you're completely isolated from that ugliness, but if you move the creation to the iSeries now it's your problem. -Walden ------------ Walden H Leverich III Tech Software (516) 627-3800 x11 WaldenL@xxxxxxxxxxxxxxx http://www.TechSoftInc.com Quiquid latine dictum sit altum viditur. (Whatever is said in Latin seems profound.)
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