A client server architecture may consist different no of tiers: it may be single tier as well as of multi-tier.
In single-tier all the processing are assigned to the server but in two tier the data is assigned to server and the business and presentation are assigned to client.
We can compare SOA and Client Server Architecture on following base:
Application Logic:
In client-Server architecture, the main processing work resides with the client creating a monolithic architecture. This somewhat abstracted a set of business logic from the client and simplified data access programming. The presentation layer within contemporary service oriented solutions can vary.Within the server environment, options exhixts as to where application logic can reside and how it can be distributed. Additionally, it is more common within an SOA for these units of processing logic to be solution agnostic.
Application Processing:
Because more client-server application logic reside in the client component, the client workstation is responsible for the bulk of processing.The 80/20 is the rule of thumb. A two tier client server solution with large user base requires each client establish its own database connection. Each connection are persistent and communication is synchronous. Whereas, Processing in SOA is highly distributed. There is no fixed processing ratio for processing.Communication between service and requestor can be synchronous or asynchronous.
Technology:
The emergence of client server application promoted the use of 4GL programming Language, such as visual basic. The technology related to CS have emerged with time, each era has used different technology. The technology for SOA has emerged but not changed drastically. The technologies being used is HTML, HTTP, XML etc.
Security:
SOA has many benifits over Client Server Architecture but when it comes about security SOA introduces some problem. As SOA is distributed the security implementation not that easy but the case is not same for Client SErver. Later WS security framework has been developed to deal with the problem.
Administration:
The administration of client server architecture is problematic, with the time maintainance cost has increased dramatically for CS, also the problem with data maintainance the data may increase and as they are at one place they pose problem, the problems may also accur due to the different technologies used for each server.
SOA due its flexibility and various features does not incur any serious maintainance problem.
In single-tier all the processing are assigned to the server but in two tier the data is assigned to server and the business and presentation are assigned to client.
We can compare SOA and Client Server Architecture on following base:
Application Logic:
In client-Server architecture, the main processing work resides with the client creating a monolithic architecture. This somewhat abstracted a set of business logic from the client and simplified data access programming. The presentation layer within contemporary service oriented solutions can vary.Within the server environment, options exhixts as to where application logic can reside and how it can be distributed. Additionally, it is more common within an SOA for these units of processing logic to be solution agnostic.
Application Processing:
Because more client-server application logic reside in the client component, the client workstation is responsible for the bulk of processing.The 80/20 is the rule of thumb. A two tier client server solution with large user base requires each client establish its own database connection. Each connection are persistent and communication is synchronous. Whereas, Processing in SOA is highly distributed. There is no fixed processing ratio for processing.Communication between service and requestor can be synchronous or asynchronous.
Technology:
The emergence of client server application promoted the use of 4GL programming Language, such as visual basic. The technology related to CS have emerged with time, each era has used different technology. The technology for SOA has emerged but not changed drastically. The technologies being used is HTML, HTTP, XML etc.
Security:
SOA has many benifits over Client Server Architecture but when it comes about security SOA introduces some problem. As SOA is distributed the security implementation not that easy but the case is not same for Client SErver. Later WS security framework has been developed to deal with the problem.
Administration:
The administration of client server architecture is problematic, with the time maintainance cost has increased dramatically for CS, also the problem with data maintainance the data may increase and as they are at one place they pose problem, the problems may also accur due to the different technologies used for each server.
SOA due its flexibility and various features does not incur any serious maintainance problem.
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