I wonder the simplicity of working with Microsoft SQL database server with .NET Entity Framework. Is there a possible开发者_运维知识库 way to use it with Oracle & MySQL database servers?
You could use another ORM, like NHibernate which supports Microsoft SQL, Oracle, and MySQL, among many others.
If you want/need to stick with EF, there are already questions on SO about using it with MySQL and with Oracle.
Oracle Data Access Components for .NET (http://www.oracle.com/technetwork/topics/dotnet/downloads/oracleefbeta-302521.html) includes also Oracle Data Provider for .NET 4 11.2.0.2.40.
A nice tutorial how to use Model-First approach can be found at http://www.oracle.com/webfolder/technetwork/tutorials/obe/db/dotnet/EntityFrameworkOBE/EntityFrameworkOBE.htm.
Good luck,
LM
A list of Oracle providers for Entity Framework can be found here:
Comparison of Entity Framework compatible providers for Oracle?
And for MySQL these are available:
http://www.mysql.com/products/connector/
http://www.devart.com/dotconnect/entityframework.html
http://uda.openlinksw.com/dotnet/
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