XS Global Models

 Title: Software Testing Life Cycle (STLC) 1. Introduction: The Software Testing Life Cycle (STLC) is a systematic approach followed by software testing teams to ensure the quality, reliability, and functionality of software applications. It comprises a series of well-defined phases and stages that help in identifying and rectifying defects, errors, or any deviations from the expected behavior of the software. 2. Definition of STLC: STLC is a process-oriented framework that encompasses the planning, preparation, execution, and closure of testing activities throughout the software development life cycle. It aims to verify and validate the software against specified requirements, ensuring that it meets the desired quality standards. 3. Phases of STLC: STLC consists of the following major phases:    a. Requirement Analysis and Test Planning:    In this phase, the testing team collaborates with the stakeholders to gather and analyze the requirements. Test planning i...

  Agile model is a software development methodology that emphasizes the iterative and incremental delivery of software products. It is a highly adaptive and flexible approach to software development that allows for frequent changes to be made to the software product throughout the development process. History: Agile methodology was introduced in 2001 through the Agile Manifesto, a set of principles for software development that emphasized customer satisfaction, working software, and collaboration between development teams and customers. Since then, Agile has gained significant popularity in the software development industry. Phases/Stages: Agile methodology consists of several phases, including: 1. Planning:  This phase involves defining the project requirements and creating a backlog of features that need to be developed. 2. Sprint:  This phase involves developing and testing a small set of features within a short timeframe (usually 2-4 weeks). 3. Review:  This phas...

The V model is a software development life cycle model that is based on the waterfall model. It was first introduced in Germany in the 1990s and has become increasingly popular in Europe. The model emphasizes the relationship between testing and development phases, making it a useful model for ensuring software quality. The V model is called so because it is shaped like a V. The model consists of two main phases: the development phase on the left-hand side of the V, and the testing phase on the right-hand side of the V. The development phase includes the requirements gathering, design, coding, and integration phases, while the testing phase includes the system testing, acceptance testing, and release phases. The following are the phases of the V model: 1. Requirements gathering:  In this phase, the software requirements are identified and documented. The requirements are reviewed by the development and testing teams to ensure they are complete and accurate. 2. System design:  ...

The Spiral model is a software development life cycle model that was first introduced by Barry Boehm in 1986. It is a risk-driven model that emphasizes on identifying and mitigating risks in the software development process. The model follows a spiral approach where each iteration of the development process is divided into smaller segments or phases that loop back on each other. The Spiral model consists of the following phases: 1. Planning:  In this phase, the objectives, requirements, and constraints of the project are defined. The software development team identifies the risks involved in the project and creates a plan to mitigate them. 2. Risk Analysis:  In this phase, the software development team identifies and analyzes the risks associated with the project. The risks are prioritized, and a plan is created to mitigate them. 3. Engineering:  In this phase, the software product is developed based on the requirements and design specifications. The software development ...

    The Waterfall model is a software development life cycle model that was first introduced by Winston Royce in 1970. It is a sequential approach that follows a linear path from requirement gathering to implementation and maintenance. The model derives its name from the waterfall-like approach, where each stage flows into the next one in a sequential manner. The Waterfall model consists of the following phases: 1. Requirement Gathering:  In this phase, the requirements of the software product are gathered from the customer or the end-user. The requirements are documented in a requirements specification document. 2. Design:  In this phase, the design of the software product is created based on the requirements specification document. The design document includes the software's architecture, the data model, and the user interface design. 3. Implementation:  In this phase, the actual coding of the software product begins based on the design document. The software ...