Abstract:

For enhancing flexibility of data access to resolve heavyweight server problems, using factory patterns,the singleton patterns are applied to design NET platform general database access layer with ADONET (ADO：ActiveX Data Object) technology, and the core code are given. The technology of design patterns to the project design can reduce the load on the system server, and makes the data access layer more flexible, and improves system of portability and scalability. In the education management system application, data access based on design patterns improves the stability of system, uses server resources, increases user satisfaction, and is theoretical basis for the future program development.

Key words: design patterns, activeX data object .NET, data access layer