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Catégorie:
Programmation Orientée Object
Titre:
3 tier and performance
Dear All!
I am on the start of the long way of 3 tier programming.
I am currently rewrite one of my prev. app.
If I understand the 3 tier prog. model. presentation tier can only communicate directly with business object and so, mustnot acces to database tier.
But what if the presentation tier want to get a list of some records. (e.g. a form with a list of invoices). Should it ask the business object to pull the list into a cursor and give back the alias of the cursor? Im am afraid, that it slows down the app. And how to use a grid with its built-in sql capacity? Or is there a better algorythm?
BB
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