client server architecture
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This document discusses two-tier and three-tier architectures. In a two-tier architecture, clients communicate directly with servers, while a three-tier architecture introduces a middleware layer between clients and servers. Some benefits of three-tier include improved security, scalability, and the ability to use multiple databases. However, three-tier architectures also have higher costs and complexity compared to two-tier.
client server architecture
- 3. The client is a man who send the request to the server . Exp. server client
- 4. Who response of the request ,which is send by client . server client
- 6. • There are two type Two tier Three tier
- 7. • The two-tier architecture is based on Client Server architecture. The two-tier architecture is like client server application. The direct communication takes place between client and server. There is no intermediate between client and server. • In a Two-Tier Architecture the applications are mostly divided into a user-services tier and a data-services tier.
- 8. • Tier 2: server platform, hosting all server software components Physical Architecture GUI Database Server Windows Client PowerBuilder Visual Basic Visual C++ Access Paradox Oracle Sybase Informix MS SQLServer Technical Architecture … Ethernet Token Ring TCP/IP
- 9. 1. Non-Complex 2. Non-time Critical information processing system 3. User Interface in User side, database management in the server side. 4. Easy to maintain and modification is bit easy. 5. Communication is faster
- 10. 1. Performance decrease if more than 100 users are involved 2. Interoperability is limited 3. System Administration is difficult
- 11. Presentation Application logic Shared data Local-area network Note: many clients per application server, several application servers per data server
- 12. • Three tier Architecture the business services are assigned a separate tier – called middle tier and is handled by middleware like MTS and IIS
- 13. It overcomes all the disadvantages of Two Tier Architecture, by providing a middle layer Improved Security – Client is not direct access to database. three tier architecture application performance is good.
- 14. 1. The development environment is more difficult to use, than the Two Tier development environment 2. The cost involved is much more than the Two tier Architecture 3. Increase Complexity/Effort
- 15. Difference between 2-tier&3-tier • Less secured as client can talk to database directly. • Complex as business logic and database exist on one system • Only database should be used • Simple as layers are separated • Application server may use services like RMI or JMS etc. • Multiple databases can be used even within the same transaction