Java Programming

Hope someone out there can either tell me the following is not possible or point me in the right direction...

I am trying to create nested enums, in the most trivial sense the following would be ideal:

public enum Databases implements Database{
	
	Oracle(DummyTables),
	MySQL(DummyTables);
	
	
	private static final Tables;
	
	private Databases(Enum Tables){
		this.Tables = Tables;
	}
	
	public Tables getTables(){
		return Tables;
	}
}

public enum DummyTables implements Tables{
	Employee,
	Permissions;
}

public interface Database{
	public Tables TABLES();
}

public interface Tables{}

Clearly this in not complete as I did not provide any methods in the Tables interface, but I hope you get the picture...