That is a pretty broad question. They are all middleware solutions.

Datasnap is the D6 version of Midas so they are essentially the same and
require the Enterprise version of Delphi. Midas/Datasnap is a polished
product with a good track record and of course has Borland behind it.

ASTA is very hot right now. I evaluated it and loved it. Steve Garland is
very accesible to answer your specific questions. If I remember, he even
has a whitepaper on the comparisions between Midas and ASTA. ASTA also has
partnered with Pocket Technnologies, so if Palm wireless is in your plans
give it a look. ASTA does not requre the Enterprise version of Delphi


<wingrap@...> wrote in message news:9mi7ef+ptnp@......

> for a multi-tiers Delphi application with a Internet connection and
> SQL Interbase,
>
> what is the best and the difference between
>
> Midas and Delphi 5 ?
> Datasnap and Delphi 6 ?
> Asta and Delphi 5 or 6 ?
>
>
>
>
>
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>
>
>