Provider?

Hello,


Actually i am using first time oracle data base acces,and i want to access HR database.
i want to ask what will be provider and data source mean?

i had used code as following
string source = "provider=;data source=ORCL;user id=HR;password=HR";
string Command = "select * from Employees";
OleDbCommand Cmd = new OleDbCommand();
OleDbConnection Con = new OleDbConnection(source);
Con.Open();
Cmd.CommandText = Command;
OleDbDataReader Myreader = new OleDbDataReader();
Myreader.Read();
while (Myreader.Read())
{
Console.WriteLine(mReader.GetString(0) + ":" + mReader.GetInt32(1));
}
Con.Close();


Note:-how i can use this data to fill grid