1. 3 Tier structure Asp Dot Net

2. • What is 3-Tier Architecture?
• Evolution to the 3-Tier Architecture
Development
• What does 3-Tier Architecture offer you?
• Advantages & Disadvantages using 3-Tier
Architecture
• Example of how you can implement 3-Tier
Architecture in .Net platform using Asp Dot
Net 3.5

3. What is 3-Tier Architecture
• A 3 way interaction in a client/server
environment.
• The user interface is stored in the client
• The bulk of the business application logic is
stored in one or more servers
• The data are stored in a database server.

16. Folder Structure for the 3 tier Application

17. Application layer is the form which provides the user interface to either
programmer of end user. Programmer uses this layer for designing purpose and to
get or set the data back and forth.

18. This layer is a class which we use to write the function which works as a mediator to
transfer the data from Application or presentation layer data layer. In the three tier
architecture we never let the data access layer to interact with the presentation layer.

22. This layer is also a class which we use to get or set the data to the database back and forth. This
layer only interacts with the database. We write the database queries or use stored procedures
to access the data from the database or to perform any operation to the database.

23. Summary
oApplication layer is the form where we design using the
controls like textbox, labels, command buttons etc.
oBusiness layer is the class where we write the functions
which get the data from the application layer and passes
through the data access layer.
oData layer is also the class which gets the data from the
business layer and sends it to the database or gets the data
from the database and sends it to the business layer.
oProperty layer is the sub layer of the business layer in which
we make the properties to sent or get the values from the
application layer. These properties help to sustain the value
in a object so that we can get these values till the object
destroy.

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