How to write a .Net application that works with both SqlServer and Oracle (now that System.Data.OracleClient is deprecated)

Question

see also System.Data.OracleClient namespace discontinued?

(Firstly don’t panic yet, System.Data.OracleClient is not being removed by Microsoft yet, however it is not

Answer 1

Aren't people supposed to be using the ADO.NET Entity Framework now? See https://stackoverflow.com/questions/82644/can-you-use-microsoft-entity-framework-with-oracle