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Introduction
As the size and complexity of software is increasing, software organizations are facing
the pressure of delivering high-quality software within a specic time, budget, and avail-
able resources. The software development life cycle consists of a series of phases, includ-
ing requirements analysis, design, implementation, testing, integration, and maintenance.
Software professionals want to know which tools to use at each phase in software devel-
opment and desire effective allocation of available resources. The software planning team
attempts to estimate the cost and duration of software development, the software testers
want to i ...