C# .Net Programming - There are three layers in 3 Tier Architecture as given below:- Presentation Layer (UI Layer) Business Access Layer (BAL) Data Access Layer (DAL) 1.) Presentation Layer(UI) :- Presentation
![Subdivision of the Data Layer into Data Access Layer and Database Layer | Download Scientific Diagram Subdivision of the Data Layer into Data Access Layer and Database Layer | Download Scientific Diagram](https://www.researchgate.net/publication/271589526/figure/fig1/AS:392489614757921@1470588224837/Subdivision-of-the-Data-Layer-into-Data-Access-Layer-and-Database-Layer.png)
Subdivision of the Data Layer into Data Access Layer and Database Layer | Download Scientific Diagram
ASP.NET Web Forms Modernization Series, Part 01: Data Access Layer Considerations | Resolute Software
![Layered architecture with decoupled access control. The data access... | Download Scientific Diagram Layered architecture with decoupled access control. The data access... | Download Scientific Diagram](https://www.researchgate.net/publication/269300664/figure/fig3/AS:667665945358349@1536195374920/Layered-architecture-with-decoupled-access-control-The-data-access-component-is.png)