ADO.NET Question: Download ADO.NET PDF

What provider ADO.net use by default?

Ado.net uses no Dataprovider by default and this is absulotely correct answere. there is no other choice for this question

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What we do with the object of ado.net dataset after using it?Can we dispose it or can we set it nothing?Is it must or not?	What is the provider and namespaces being used to access oracle database?