Multi-tier Architecture in application development

We can categorize our n- tier architecture into 3 sections

1. User Interface
   

   Presentation
   

   User interface code
   

   Business logic interaction code
   

2. Middle Layer
   

   Business layer
   

   Application layer
   

   Database layer (This layer abstracts the retrieval and storage of data in your database)
   

3. Database Layer
   

   Database layer
   

   Stored procedures
   

   Integration services
   

   Database tables, logs & indexes
   

 

Reference:-

MCPD (70-547) Designing and Developing Web-Based Applications Using the .NET Framework