Test Data Output Test Data Output

8. Test Data Output

After preparing test data, the system under study is tested using the test data. While After preparing test data, the system under study is tested using the test data. While testing the system using test data, errors are again uncovered and corrected by using above testing the system using test data, errors are again uncovered and corrected by using above testing and corrections are also noted

testing and corrections are also noted for future use.for future use.

MAINTENANCE MAINTENANCE

Maint

Maintenance is the enance is the tail end of tail end of life cycle but it life cycle but it is the is the most expensmost expensive and ive and consumconsumes energy, costes energy, cost and time in the long run.

and time in the long run.

After a new system has been implemented, problems and errors and discrepancies appear and After a new system has been implemented, problems and errors and discrepancies appear and must be fixed. This required “system maintenance” as

must be fixed. This required “system maintenance” as an ongoing process.an ongoing process.

When the system maintenance becomes more costly and time demanding, new system will have When the system maintenance becomes more costly and time demanding, new system will have to be thought of,

to be thought of, thereby completing the full system life cyclethereby completing the full system life cycle

IMPLEMENTATION IMPLEMENTATION

Operational systems are quickly taken for granted. Every system requires periodic evaluation Operational systems are quickly taken for granted. Every system requires periodic evaluation after implementation. A post-implementation review measures the system’s performance against after implementation. A post-implementation review measures the system’s performance against   pr

  predeedefinfined ed reqrequiruiremeementsnts. . UnlUnlike ike testestiting, ng, whiwhich ch detdetermermineines s the the sysystestem m faifailurlures es so so thathat t thethe necessary adjustments can be made; a post-implementation review determines how well the necessary adjustments can be made; a post-implementation review determines how well the system continues to meet performance specifications.

system continues to meet performance specifications.

A post-implementation review is an evaluation of a system in terms of the extent to which the A post-implementation review is an evaluation of a system in terms of the extent to which the system accomplishes stated objectives and actual projects costs exceed initial estimates.

system accomplishes stated objectives and actual projects costs exceed initial estimates.

The review team prepares a formal review plan around the objective(s) of the review, the type of  The review team prepares a formal review plan around the objective(s) of the review, the type of  evaluation to be carried out, and the time schedule required. An overall plan covers the following evaluation to be carried out, and the time schedule required. An overall plan covers the following areas:

areas:

1.

1. AdAdmimininiststrarattivive e plplan an – – ReReviviewews s ararea ea obobjjececttiivevess, , opopereratatiing ng cocosstts, s, acacttuaual l opopereratatiionon  performance, and benefits.

 performance, and benefits.

2.

2. PePersrsonnonnel rel requequiriremementents plas plan – Revn – Revieiews pews perfrforormamancnce obje objecectitive anve and trd traiainining peng perfrforormamancncee to date.

to date.

3.

3. HaHardrdwaware re PlPlan an – R– Revevieiews ws peperfrforormamancnce se spepecicifificacatitionons.s.

4.

4. DoDocucumementntatiation on rereviview ew plplan an – – RevRevieiews ws ththe e sysyststem em dedevelvelopopmement nt efeffofortrt^..

SNAPSHOTS

SNAPSHOTS

CONCLUSION CONCLUSION

The project File Compressor is completed, satisfying the required design specifications. The The project File Compressor is completed, satisfying the required design specifications. The system provides a user-friendly interface. The software is developed with modular approach. All system provides a user-friendly interface. The software is developed with modular approach. All modules in the system have been tested with valid data and invalid data and everything work  modules in the system have been tested with valid data and invalid data and everything work  successfully. Thus the system has fulfilled all the objectives identified and is able to replace the successfully. Thus the system has fulfilled all the objectives identified and is able to replace the existing system. The constraints are met and overcome successfully. The system is designed as existing system. The constraints are met and overcome successfully. The system is designed as like it was decided in the design phase. The system is very user friendly and will reduce time like it was decided in the design phase. The system is very user friendly and will reduce time consumption. This software has a user-friendly screen that enables the user to use without any consumption. This software has a user-friendly screen that enables the user to use without any inconvenience. The user need not depend on third party software’s like winzip, winrar, Stuff etc.

inconvenience. The user need not depend on third party software’s like winzip, winrar, Stuff etc.

The software can be used to compress files and they can be decompressed when the need arises.

The software can be used to compress files and they can be decompressed when the need arises.

The application has been tested with live data and has provided a successful result. Hence the The application has been tested with live data and has provided a successful result. Hence the software has proved to work efficiently.

software has proved to work efficiently.

REFERENCE REFERENCE

BOOKS:

BOOKS:

 Vijay Mukhi -‘Vijay Mukhi -‘Visual Studio.Net with C#Visual Studio.Net with C#

Eric Gunnerson

Eric Gunnerson- A Programmer- A Programmer's Introduction to 's Introduction to C# [Paperback]C# [Paperback]

Programming C#

Programming C#, Second Edition - O'Reilly Media, Second Edition - O'Reilly Media

LINKS : LINKS :

 www.gzip.org/algorithm.txtwww.gzip.org/algorithm.txt

 en.wikipedia.org/wiki/Gzipen.wikipedia.org/wiki/Gzip

 csharp.net-tutorials.comcsharp.net-tutorials.com

 http://www.dotnetspider.com/tutorials/http://www.dotnetspider.com/tutorials/