Oracle DB as external content type in SharePoint 2013

Hi all,

I'm trying to create and ECT from an Oracle Database in SP 2013. Is it possible to create it with Sharepoint Designer 2013? I had a look at this article but it creates a DataSource. I am no expert in Sharepoint, but I think that I cannot create a list dynamically updated with Datasources, right? Is it possible through Designer or should I use Visual Studio?

Thanks in advance for your time