DataSet or DataTable in ActionScript 3.0

[COLOR=black][FONT=Arial]I just got started with ActionScript and I’m seeing now the variables. In ASP.Net there is DataSet that can be short said as a group of tables, and DataTable that is the table itself. I tried to declarate a DataSet in ActionScript but don’t seem to be the same, even though there doesn’t appear the combo with functions and properties of a DataSet. So I was wondering how I should create a table in ActionScript as I do in ASP.net?[/FONT][/COLOR]
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[FONT=Arial]Thank you very much.[/FONT]