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We have set up a resource account for our conference room as well. I don't know all the answers to your questions, but I'll share what I've learned... If you want a reply to come back approving reservation of the conference room, that implies that you want someone to do the approving. That...

Thanks for spelling it out, John, I appreciate the insight. Very elegant.

John, I think I see where you're going. Yours is an even more refined approach, and I can see the advantages for scaling to many users. I'm guessing that you're saving the original value of each column in order to do the comparison at the data-access layer. If so, mind sharing how you're...

Calahan - everyone's entitled to change their mind! What you describe is pretty much where I think I'm headed. It has the added advantage of allowing me to occasionally work with one of these line item doohickeys on a stand-alone basis. (Okay, in my app it's not really a line-item, it's an...

John, you said, "When the UI tier passes down instructions to delete or update we reread each row that has to be deleted or updated. At that point we compare each column we just read with what is in the original recordset to detect any situation where another user had updated a database...

Thanks for the great responses. Tarek, I agree that everyone is focused on minimizing travel across the network, and that the distinction between using a collection of child objects as opposed to an array (while important for other reasons) is not important here. In either case we're talking...

I've been wondering that myself. I got a hint from an article in VBPJ by Deb Kurtura (sp?). Although she didn't go into detail, she suggested that XML provides one more mechanism for transferring data between tiers. For example, if the data access tier needs to pass all kinds of data to the...

Getting and Persisting Collections... Like many others who've contributed to this thread, I'm trying hard to wrap my head around N-Tier architecture. Now I'm hoping to get some outside perspective on handling collections (aka multiple record resultsets) My UI tier needs to display an entity...