2 tier and 3 tier architecture

2. Disclaimer: This presentation is prepared by trainees of
baabtra as a part of mentoring program. This is not official
document of baabtra –Mentoring Partner
Baabtra-Mentoring Partner is the mentoring division of baabte System Technologies Pvt .
Ltd

3. Typing Speed
Week
Target Achieved
1
25
17
2
30
25

4. 2 & 3-TIER
ARCHITECTURE
Swafeena Nima KM
Swafeenanima @gmail.com
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Swafeenanima
twitter.com/username
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Swafeenanima
9562852057

5. 2-TIER ARCHITECTURE
 It is client-server architecture
 Direct communication
 Run faster(tight coupled)

6. 2-TIER ARCHITECTURE(Contd)
 Two parts:
1) Client Application (Client Tier)
2) Database (Data Tier)
 On client application side the code is written for saving the data
in the SQL server database

7. Advantages:
 Easy to maintain and modification is bit easy
 Communication is faster
Disadvantages:
 Performance will be degrade upon increasing the
users
 Cost-ineffective

8. 3-TIER ARCHITECTURE
 Web based application
 Three layers:
1) Client layer
2) Business layer
3) Data layer

9. Client Layer
 Contains UI part of our application
 This layer is used for the design purpose where data is
presented to the user or input is taken from the user

10. Business layer
 All business logic written like validation of data,
calculations, data insertion etc…
 This acts as a interface between Client layer and Data
Access Layer
 Make communication faster between client and data
layer

11. Data layer
 Actual database is comes in the picture
 Contains methods to connect with database and to
perform insert, update, delete, get data from database
based on our input data

12. Advantages
 Performance – Because the Presentation tier can cache
requests, network utilization is minimized, and the load is
reduced on the Application and Data tiers.
 Scalability – Each tier can scale horizontally
 Better Re-use

13. Advantages(contd)
 High degree of flexibility in deployment platform and
configuration
 Improve Data Integrity
 Improved Security – Client is not direct access to database.
 Easy to maintain and modification is bit easy, won’t affect o
ther modules

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