ІІІ layered Approach:-

• In this method Front end and Backend Tool will have only one set of native drivers
• These native Drivers do not interact with each other, rather interact with 3^rd component known as “Middleware”
• Middleware is designed in such a way that it can understand any front end native drivers and any back end native drivers 

 

Abbreviations of the terms used  

                                                                       

DAO                ----     Data Access Object

RDO                ----     Remote Data Object

ADO                ----     ActiveX Data Object

ADO.Net          ----     ActiveX Data Object for .Net

OLEDB            ----     Object Linking Embedding Data Base

ODBC              ----     Object Data Base Connectivity

   JDBC                  ----     Java Data Base Connectivity