Should I have one class for every database I use?

private object GetOrderAttribute(string attributeName){
    // use a data structure (like a hash table) to store and access internally
}
...
output("Quantity: " + GetOrderAttribute("quantity"));
// etc.

Method New Order(orderId) {
   Get Database 1 Details
   Load Details into appropriate Variables
   Get Database 2 Details
   Load Details into appropriate Variables
   Get Database **N** Details
   Load Details into appropriate Variables
}