Development tools: Visual Studio .NET 2005 + Server2005 Project description: OA office system is designed based on B/S architecture. Including file management, shared downloads, message management, official document circulation, notification management, internal forums, human resources management, asset management, etc. Technical application: database (SQL2005 sql script writing trigger stored procedure view) Use CodeSmith to generate the framework. Use HTML/JavaScript/CSS technology to implement standard and standardized client-side static and dynamic effects manual paging caching