Dear Friend, Various Revision Characteristics of software are :- a) Maintainability : Maintenance of the software should be easy for any kind of user. b) Flexibility : Changes in the software should be easy to make. c) Extensibility : It should be easy to increase the functions performed by it. d) Scalability : It should be very easy to upgrade it for more work(or for more number of users). e) Testability : Testing the software should be easy. f) Modularity : Any software is said to made of units and modules which are independent of each other. These modules are then integrated to make the final software. If the software is divided into separate independent parts that can be modified, tested separately, it has high molecularity.

a) Interoperability : Interoperability is the ability of software to exchange information with other applications and make use of information transparently. b) Reusability : If we are able to use the software code with some modifications for different purpose then we call software to be reusable. c)Portability : The ability of software to perform same functions across all environments and platforms, demonstrate its portability.

What are the Transition Characteristics of the software : The Transition Characteristics of the software has been elaborated herein below: a) Interoperability : Interoperability is the ability of software to exchange information with other applications and make use of information transparently. b) Reusability : If we are able to use the software code with some modifications for different purpose then we call software to be reusable. c)Portability : The ability of software to perform same functions across all environments and platforms, demonstrate its portability. Importance of any of these factors varies from application to application. In systems where human life is at stake, integrity and reliability factors must be given prime importance. In any business related application usability and maintainability are key factors to be considered. Always remember in Software Engineering, quality of software is everything, therefore try to deliver a product which has all the above mentioned characteristics and qualities.