In the present scenario, software industries are facing lots of challenges and difficulties for software reliability. Test and measurement can be considered as reliable if they are producing same results over repeated time of quality testing. Software reliability acts an important role in the development of software in Software Development Life Cycle. There are so many factors and issues in SDLC that can affect the software reliability. Object oriented metrics provide a quantitative basis for planning and measuring software development process. Object oriented software design supports some of the basic design principals as encapsulation, cohesion, coupling and inheritance. This research paper is focusing on functionality and effectiveness of design phase which influence the software reliability in the object oriented software and of course, object oriented metrics determine how these matrices can reduce the faults and can increase the reliability of software.

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Software Quality Reliability Design Phase Functionality Object Oriented Metrics Ann.