what is the difference between 2-tier appli. and 3-tier
appli. testing
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Answer Posted / sunilmn
Projects are broadly divided into two types of :
2 tier applications
3 tier applications
CLIENT / SERVER TESTING
[a] This type of testing usually done for 2 tier
applications (usually developed for LAN)
Here we will be having frontend and backend.
The application launched on frontend will be having forms
and reports which will be monitoring and manipulating data
Eg : applications developed in VB,VC++,Core
Java,C,C++,D2K,PowerBuilder etc.,
The backend for these applications would be MS Access, SQL
Server, oracle, sybase, mysql, quadbase
The tests performed on these type of applications would be
- user interface testing
- manual support testing
- Functionality testing
- compatability testing & configuration testing
- intersystems testing
WEB TESTING
[b] This is done for 3 tier applications (developed for
Internet / intranet / xtranet)
Here we will be having Browser, web server and DB server.
The applications accessable in browser would be developed
in HTML, DHTML, XML, JavaScript etc.,
(we can monitor thru these applications)
Applications for the webserver would be developed in Adv
Java, ASP, JSP, VBScript, JavaScript, Perl, ColdFusion, PHP
etc.,
(all the manipulations are done on the web server with the
help of these programs developed)
The DBserver would be having oracle, sql server, sybase,
mysql etc.,
(all data is stored in the database available on the DB
server)
The tests performed on these type of applications would be
- user interface testing
- Functionality testing
- security testing
- browser compatability testing
- load / stress testing
- interoperability testing/intersystems testing
- storage and data volume testing
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