Client-Server and Web Based Testing


This type of testing is usually done for 2 tier applications (usually developed for LAN). Here we will be having front-end and backend. The application launched on front-end will be having forms and reports which will be monitoring and manipulating data.

E.g: 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 types of applications would be

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 accessible in browser would be developed in HTML, DHTML, XML, JavaScript etc. (We can monitor through these applications). Applications for the web server would be developed in Java, ASP, JSP, VBScript, JavaScript, Perl, Cold Fusion, 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 types of applications would be
A web-application is a three-tier application

This has a browser (monitors data) [monitoring is done using html, dhtml, xml, javascript]-> webserver (manipulates data) [manipulations are done using programming languages or scripts like adv java, asp, jsp, vbscript, javascript, perl, coldfusion, php] -> database server (stores data) [data storage and retrieval is done using databases like oracle, sql server, sybase, mysql].

The types of tests, which can be applied on this type of applications, are:
  1. User interface testing for validation & user friendliness
  2. Functionality testing to validate behaviors, i/p, error handling, o/p, manipulations, services levels, order of functionality, links, content of web page & backend coverage’s
  3. Security testing
  4. Browser compatibility
  5. Load / stress testing
  6. Interoperability testing
  7. Storage & data volume testing
A client-server application is a two tier application

This has forms & reporting at front-end (monitoring & manipulations are done) [using vb, vc++, core java, c, c++, d2k, power builder etc.,] -> database server at the backend [data storage & retrieval) [using ms access, sql server, oracle, sybase, mysql, quadbase etc.,]

The tests performed on these applications would be
  1. User interface testing
  2. Manual support testing
  3. Functionality testing
  4. Compatibility testing
  5. Intersystem testing
Some more points to clear the difference between client server, web and desktop applications:
Desktop application:
  1. Application runs in single memory (Front end and Back end in one place)
  2. Single user only
Client/Server application:
  1. Application runs in two or more machines
  2. Application is a menu-driven
  3. Connected mode (connection exists always until logout)
  4. Limited number of users
  5. Less number of network issues when compared to web app.
Web application:
  1. Application runs in two or more machines
  2. URL-driven
  3. Disconnected mode (state less)
  4. Unlimited number of users
  5. Many issues like hardware compatibility, browser compatibility, version compatibility, security issues, performance issues etc.

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