software development ppt by gleam technologies
TRANSCRIPT
Software Development
WHAT IS A SOFTWARE
Software is any set of machine-readable instructions that directs a computer's processor to perform specific operations.Software contrasts with computer hardware, Software includes computer programs, libraries and their associated documentation.Software written in a machine language is known as "machine code".
SOFTWARE DEVELOPMENT
Software development is the computer programming, documenting, testing, andbug fixing involved in creating and maintaining applications.The term refers to a process of writing and maintaining the source code.It includes all that is involved between the conception of the desired software through to the final manifestation of the software.Software development may include research, new development, prototyping,etc.
PROCESS OF SOFTWARE DEVELOPMENT
SOFTWARE DEVELOPMENT METHODOLOGIES
There are various Software development models or methodologies.They are as follows:1. Analyzing the problem2.Design3. Develop4. Testing5. Release6. Maintenance7. Deployment
SOFTWARE DEVELOPMENT LIFE CYCLE
SOFTWARE DEVELOPMENT PARADIGM
The software development paradigm helps developer to select a strategy to develop the software.A software development paradigm has its own set of tools, methods and procedureswhich are expressed clearly and defines software development life cycle.Few processes or models are as follows:1. Waterfall Model2. Iterative Model3. Spiral Model4. V – model5. Big Bang Model
WATERFALL MODEL
Waterfall model is the simplest model of software development paradigm.It says the all the phases of SDLC will function one after another in linear manner.This model assumes that everything is carried out and taken place perfectly as planned in the previous stage.This model does not work smoothly if there are some issues left at the previous step.
This model leads the software development process in iterations. It projects the process of development in cyclic manner repeating every step after every cycle.The software is first developed on very small scale.And all the steps are followed which are taken into consideration.After each iteration, the management team can do work on risk management and prepare for the next iteration.
ITERATIVE MODEL
Spiral model is a combination of both, iterative model and one of the SDLC model.It can be seen as if you choose one SDLC model and combine it with cyclic process .This model considers risk, which often goes un-noticed by most other models. .There are 4 phase in the spiral model.
SPIRAL MODEL
V-Model provides means of testing of software at each stage in reverse manner.At every stage, test plans and test cases are created to verify and validate the product .This makes both verification and validation go in parallel.This model is also known as verification and validation model.
V MODEL
This model is the simplest model in its form.It requires little planning, lots of programming and lots of funds.This model is conceptualized around the big bang of universe.If we put together lots of programming and funds, you may achieve the best software product.It does not follow any process.
BIG BANG MODEL
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