database polymorphism in visual basic

The following Visual Basic project contains the source code and Visual Basic examples used for database polymorphism. This vb app contains classes which demonstrate how to use polymorphism.
The source code and files included in this project are listed in the project files section, please make sure whether the listed source code meet your needs there.

Project Files: 

File NameSize
AS400.cls 1466
Database.cls 1453
DatabasePolymorphism.vbp 992
DatabasePolymorphism.vbw 206
Form1.frm 2494
IDatabase.cls 778
MSAccess.cls 1407
readme.txt 318
SQLServer.cls 1412