Questions and Answers
What is the primary output of the Requirements Gathering phase?
Which design type focuses on the overall architecture of a software solution?
Which development approach is characterized by its flexibility and iterative process?
What type of testing ensures that all integrated components work together as intended?
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Which deployment strategy involves releasing software to a subset of users before a full rollout?
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What is a disadvantage of Direct Changeover as a changeover method?
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Which testing method involves verifying that the software meets business requirements?
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What is a primary benefit of Phased Deployment?
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Study Notes
Software Development Life Cycle (SDLC)
Requirements Gathering
- Purpose: Understand and document what the software needs to achieve.
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Activities:
- Conduct interviews with stakeholders.
- Use surveys and questionnaires to gather input.
- Analyze existing systems and user workflows.
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Outputs:
- Requirements Specification Document (RSD).
- Functional and non-functional requirements.
Design Phase
- Objective: Create a blueprint for the software solution.
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Types of Design:
- High-Level Design (HLD): Overall architecture and technology stack.
- Low-Level Design (LLD): Detailed component designs, algorithms, and data structures.
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Outputs:
- Design Document.
- Prototypes or mockups.
Development Process
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Approaches:
- Waterfall: Sequential phases; easier for small projects.
- Agile: Iterative and incremental; flexible to changes.
- DevOps: Combines development and operations for continuous delivery.
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Key Activities:
- Writing code based on design specifications.
- Version control using systems like Git.
- Code reviews and pair programming.
Testing Methods
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Types of Testing:
- Unit Testing: Tests individual components for correctness.
- Integration Testing: Ensures components work together.
- System Testing: Validates the complete and integrated software.
- Acceptance Testing: Confirms the software meets business requirements.
- Automation: Use of tools to automate repetitive testing tasks.
Deployment Strategies
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Deployment Types:
- Big Bang: All components deployed at once; risk of failures.
- Phased Deployment: Gradual rollout; reduces risk.
- Rolling Deployment: New version deployed to a subset of users.
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Considerations:
- Downtime and service continuity.
- Monitoring post-deployment for issues.
Changeover Methods
- Direct Changeover: Switch from old to new system immediately; risky but quick.
- Parallel Running: Run both systems simultaneously; safer but resource-intensive.
- Pilot Running: Deploy to a small user group before full rollout; allows for testing in a real environment.
- Phased Changeover: Gradual transition in stages; minimizes risk and impact.
Requirements Gathering
- Essential for determining software objectives and necessary functionalities.
- Involves stakeholder interviews to collect diverse viewpoints.
- Surveys and questionnaires are used to gather input from a wider audience.
- Analyzing existing systems helps identify areas for improvement.
- Results in a Requirements Specification Document (RSD) detailing functional and non-functional requirements.
Design Phase
- Aims to provide a comprehensive blueprint for the software solution.
- High-Level Design (HLD) outlines the overall architecture and technology choices.
- Low-Level Design (LLD) focuses on detailed designs of components, algorithms, and data structures.
- Produces a Design Document along with prototypes or mockups for visualization.
Development Process
- Various development methodologies include:
- Waterfall: Linear and sequential; suited for small projects.
- Agile: Emphasizes flexibility and iterative progress.
- DevOps: Integrates development and operations for a streamlined continuous delivery process.
- Key activities involve coding based on design, utilizing version control systems like Git, and conducting code reviews or pair programming for quality assurance.
Testing Methods
- Includes multiple types of testing to ensure quality and functionality:
- Unit Testing: Verifies individual components for correctness.
- Integration Testing: Checks interactions between components.
- System Testing: Validates the complete and integrated software.
- Acceptance Testing: Ensures the solution meets end-user and business requirements.
- Automation tools are employed to streamline and expedite repetitive testing tasks.
Deployment Strategies
- Different deployment strategies include:
- Big Bang: All components launched simultaneously, which presents higher risks.
- Phased Deployment: Gradual rollout, minimizing the risk of failures.
- Rolling Deployment: New software version is released to a limited user group first.
- Key considerations during deployment are service continuity and monitoring for issues post-launch.
Changeover Methods
- Direct Changeover: Immediate transition to the new system, presenting high risks but quick benefits.
- Parallel Running: Maintains both old and new systems concurrently, safer but requires more resources.
- Pilot Running: Introduces the new system to a small user group for testing before full implementation.
- Phased Changeover: Involves a gradual transition to reduce risk and impact on operations.
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Description
Test your knowledge on the Software Development Life Cycle (SDLC) covering the phases of requirements gathering, design, and various development processes. This quiz will challenge your understanding of key concepts, methodologies, and outputs within SDLC.
