However, the downloads for this series also come with the T-SQL scripts to recreate the database in SQL Server 2000 or SQL Server 2005.
You'll find the download link at the end of this article.
The following figure shows the four main components of the application: .
They don't have any behavior, and can therefore be considered as "dumb" objects.
All they can do, is hold and expose data through their public properties.
Additionally, each BO object has a List counterpart, like and are used to hold collections of the business objects.
To display a list of users in a will be quite plain, with black text on a white background.
Although the ASPX page only needs 11 lines of code, a lot of other code is executed under the hood.
The target audience for this series are developers that are ready to make the switch from using controls with custom business objects. NET 2 and C# is necessary while some knowledge about object oriented design certainly helps.In the middle of the diagram, you see the Business Logic Layer; the bridge between the web site and the data access layer.The Bll gets instructions from the presentation layer (the web site in this example), to carry out tasks, like retrieving items from the data layer, or sending changed objects back into this layer. - I have written a new series on N-Layer design targeting ASP. How do these business objects interact with other parts of the system? It builds on the foundation created in this first series, but digs much deeper into concepts like Validation, Sorting, Paging, Concurrency and Security. What should these objects be capable of and how do they look.