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Software Engineering is the purpose of a well-organized approach to the development, development, and maintenance of software and the study of strategies that is the application of engineering to software. Software engineering is a component of system engineering. System engineering is involved with all aspects of computer-based techonlogy systems strengthening including software, hardware, and process engineering. System engineers are included in architectural design, integration, system specification, and deployment.
Software process: it is the set of exercises and associated results that produce a software product. These are four steps of software process.
Software specification: where the client and engineers determine the software to be produced.
Software development: where the software is created and programmed.
Software validation: where the software is examined. Software is trustworthy or not.
Software evolution: where the software is transformed to changing the consumer and market necessary. Stages for the software development
Fundamentals analysis: find out what the client want the software to do.
Software design: planning the software solution.
Implementation: where it is part of the method where the program code for the project.
Testing: executing the application trying to find software bugs.
Maintenance: any action-oriented to change an existing software product.
The attribute of good software
Maintainability: software should be addressed in such a way that it may evolve to meet changing the
needs of customers.
Dependability: software must be trustworthy.
Efficiency: software should not make wasteful use of the system
Resource Usability: software needs to be available by the users for which it was created. Challenges in
- Software Engineering
- Scale Quality and productivity
Productivity: an engineering project driven by cost and schedule. Productivity follows both of these
steps: If P is higher, the cost is lower. If P is costlier, the time taken can be lesser.
Quality: it is the major driving
factor: It has six attributes:
- Functionality
- Reliability
- Usability
- Efficiency
- Maintainability
- Portability
Consistency and repeatability Change: software must change to support the changing business needs.
Software development models
Waterfall model: after each phase is finished, it proceeds to the next one.
Specification Design Implementation Integration and testing Deployment Maintenance alterative
Development: SpecificationIterative development System testing Common-based software engineering specification Development Integration and testing Development and evolution costs for long-lifetime system development System evolution Advantage of software engineering Consistent solutions to common problems Standardized methods of implementation Reengineering and testing.