I've been trying to understand when DataView would come in handy. I have a SQL database table with about 1,000,000 rows. The user can enter a search string, and my application returns a list of all the rows that match the search string. This list might be over 10,000 rows.
At first I thought this would be a perfect situation for a DataView, since it involves large numbers of rows, and I don't necessarily want to get all 10,000 rows if the user only needs to look at the first 20. However, I'm finding that, since DataView re-queries the database with each page view of the results list, any time advantage I might have gotten initially is quickly lost. It seems that using a PageableListView, I just query the database once and I'm good. So my question is, am I misunderstanding the purpose of the DataView? All of the online examples I find for DataView use Java databases rather than SQL relational databases. Is the DataView only useful if you already have some kind of a Java database to back it up? Or is there some way that I can take advantage of DataView in this situation without having to re-query the database whenever the user clicks to a different page of the result list?
