Building a Pick List
A common requirement for a business application is to display a list of items from which a user makes a selection. This can be a list of customers or products in a catalog or anything else. The basic behavior is the same—the user views a list that contains some summary attributes for each entry and then picks from the list. The system responds by displaying a more detailed view of the selection that includes additional attributes.
The potential performance problem with building a pick list is that reading all the attributes for the items in the list is inefficient. It would be faster to only read the summary information that’s needed for the list and then read the detailed attributes for an entry only when they’re requested. ...
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