Quality

quality is term which depends on persons satisfication,so its always judge with requirement need of person.so in order to test quality of software we should be very much clear with requirement need of person which he is expecting from software.this is how quality of software gets measured for any application. parameters of software quality parameters are nothing but proven software engineering testing methods and apporaches. basically there are two types of apporaches to test software 1. white box testing apporach, 2.black box tesing apporach first type testing apporach is used by software developers while developing applications.why its called as white box approach because they have access right to see code. second type of approach also known as specification based tesing approach, using this approach testers test application behaviour with specification ,just like giving input checking output .why it is called black box because tester does not have right to acess code. soon more parameters will be added