Project architecture and its flow?

In my project flow is like this-

C# code behind page call the busine开发者_JS百科ss class in which we have declared variables and method for add,delete and call the stored procedure in the same file of business class .Then which architecture is this?

To disambiguate layers and tiers, have a look at this article.

You could say that you have a 3 or 4-layer architecture, depending on how you look at it, but that is a statement that one can make about many applications. What are you actually looking for?

To elaborate on the layer , you have:

1. A presentation layer (HTML + JS)
2. A presentation logic layer (Codebehind)
3. Data access layer (business class)
4. Data layer (the actual database)

Unless you are actually doing some further logic in the business class, I wouldn't call it a "business layer".