Software Engineering

What is Software Engineering-?

Software Engineering is a work and a method by which we can develop or create softwares for computers, smartphone and other electronic devices by using programming languages by analysing the requiements or needs of the user.

Purpose of the Software Engineering.

✱ To manage large software

✱ For greater scalability

✱ To manage the cost

✱ To manage the dynamic nature of the software

✱ For better quality management

What is SDLC-?

SDLC stand for "Software Development Life Cycle", means if we are creating a software, in that SDLC will tell us how much time it is gonna take to build and how many steps we have to use when and where. It tells us the Entire life time of software from beginning to ending.

It has three main stages:-

Conception stage:- Analyzing and solution finding

Implementation stage:- Implement the software after analyzing and finding solution

Maintenance:- Updating

The SDLC model is classified into three categories based on there advantages and dis-advantages:-

Water fall model:- Also we can call it as (Classical Model). This is very old model.

✱ The waterfall model is simple and classical model of all the models.

✱ This model is also known as leaner sequence model.

✱ This model is not a practical model, this is only theoretical model.

✱ In this model each and every phase must be completed before moving to the next place.

✱ This is only used in short projects.

✱ At the end of each phase a review will take place.

✱ Waterfall model has 6 stages, check it out below.

Feasability Study:- This will tell us that we are financially and technically visible or not to create a software.

Requirement Specification:- Gathering Requirement that what are the things we need to create a software.

Design:- Creating design that how should be our software looks like.

Coding:- Implementation of the software via coding using programming languages.

Test:- After creating the software we test that our software is working fine or not.

Maintenance:- If client wants to add or remove something or he want to update/upgrade the software.

Figure of Waterfall Model:-

waterfall model, waterfall methodology, waterfall model in software engineering, waterfall method, waterfall model is not suitable for, iterative waterfall model, sdlc waterfall, advantages of waterfall model, waterfall model advantages and disadvantages, waterfall software development, disadvantages of waterfall model, the incremental model of software development is, waterfall model phases, waterfall model example, the waterfall model of software development is, waterfall process, waterfall development methodology, waterfall model in software testing, classical waterfall model, agile and waterfall methodologies, waterfall model diagram, explain waterfall model, the waterfall model, linear sequential model, the waterfall model of software development is mcq, waterfall model sdlc, waterfall life cycle model, waterfall process model, v model sdlc, waterfall development model, modified waterfall model, projects that use waterfall model, waterfall software, explain waterfall model with example, waterfall methodology definition, waterfall model is good, agile and waterfall model, waterfall software development life cycle, waterfall model of software development, waterfall phases, waterfall methodology advantages, linear sequential model in software engineering, stages of waterfall model, waterfall lifecycle, waterfall model steps, waterfall methodology in project management, waterfall methodology phases, advantages of waterfall model in software engineering, explain waterfall model in software engineering, waterfall design process, define waterfall model, waterfall development process, waterfall methodology example, waterfall model and agile model, waterfall model in software engineering ppt, waterfall cycle, waterfall model ppt, the linear sequential model of softwa,re development is, agile v model, spiral sdlc model, waterfall methodology project management, waterfall methodology stages, waterfall method of software development, software waterfall model, waterfall model example project, waterfall stages, iterative waterfall model in software engineering, waterfall model is, agile waterfall model, the waterfall method, v shaped sdlc model, waterfall methodology advantages and disadvantages, waterfall model of product design is an example of, waterfall software development methodology, waterfall model in software project management, application of waterfall model, benefits of waterfall methodology, waterfall model is suitable for, traditional waterfall model, waterfall approach meaning, waterfall method in software engineering, disadvantages of waterfall methodology, waterfall model project management, classic life cycle model, water model in software engineering, waterfall development method, waterfall model methodology, waterfall advantages, waterfall model of software development is, waterfall in software engineering, contoh model waterfall, types of waterfall model, traditional waterfall methodology, characteristics of waterfall model, waterfall testing model, waterfall methodology steps, phases of waterfall model in software engineering, waterfall system development, waterfall sdlc phases, waterfall v model

Advantages of the Waterfall Model:-

1. Waterfall Model is a very simple and easy model which we can use in small projects.

2. In this model once we completing a phase successfully completed then only we can move to the next phase. So, there is no overlapping between the phases.

3. Each phase as a well defined tasks and a review process.

Dis-Advantages of the Waterfall Model:-

1. Not used in a big projects.

2. We can't go back to the previous phase. we can only move to the forward phase or next phase. This is the reason it's name is waterfall model.

3. This model contains high risks.

4. It is poor model for Complex and Object Oriented Projects.

Prototype Model:- Added new concepts.

✱ It is very famous software development model.

✱ In this model client is also involved at the time of designing.

✱ In prototype model the work is modified until the client satisfied, then we take next phase.

✱ The goal of the prototype model to provide a system will overall fully functionally.

✱ Prototype is an iterative development cycle between developer and client.

✱ We can also use the prototype model with other model.

Requirement Gathering:- Developer will gather requirements to develop.

Design:- Developer will create a design that how it should be look like.

Build Prototype:- Developer will create a prototype.

Customer evaluation:- Developer will show the prototype to the customer for customer review.

Review and Update:- If customer won't like that prototype, developer will review and update the software until customer like the software. After customer approve the software prototype then the developer will follow the below things.

Coding:- Developer will write the coding with using programming language to create a software.

Testing:- Developer will test the software.

Maintenance:- Developer will maintain the software.

Figure of Prototype Model:-

prototype model, prototype model in software engineering, the prototyping model of software development is, prototype development, software prototyping, example of prototype, evolutionary prototyping, prototyping methodology, the prototyping model of software development is mcq, prototyping in software engineering, prototype model example, types of prototype, rapid prototyping model, evolutionary prototyping model, software prototyping in software engineering, prototyping model of software development is, prototype model in sdlc, model and prototype, virtual prototype, real life example of prototype model, system prototype, prototyping model of software development are basically preferred, prototyping in system analysis and design, types of prototype model, prototyping model of software development is well suited for, prototype development process, a prototype is a model that, the prototyping model is most suited to build, engineering prototype, prototyping in software process may involve, prototype in business, sdlc prototype, throwaway prototyping model, prototyping and modelmaking for product design, explain prototype model, throwaway prototype, prototyping model of software development is mcq, prototype model in software engineering in hindi, prototype 3d printing, prototype life cycle model, prototype in software development, software prototype model, prototyping process model, prototype development services, rapid throwaway prototyping, prototype model in software testing, prototype software development model, evolutionary prototyping in software engineering, explain prototype model in software engineering, prototype development example, rapid prototyping methodology, prototyping model of software development are basically preferred mcq, rapid prototypes llc, rapid prototype development, define software prototyping, prototyping model of software development well suited, system prototype example, valid prototyping model, rapid prototyping in software engineering, define prototype in software engineering, rapid prototyping model in software engineering, product prototype development, prototype life cycle model in software engineering, define prototype model, throwaway prototyping methodology, types of software prototypes, explain prototype approach, cad prototype, types of prototyping in software engineering, different types of prototype, define prototype model in software engineering, software prototype example, example of prototype model in software engineering, model model prototype, prototype development model, prototyping model is, the prototyping model of software development is well suited, evolutionary prototype model in software engineering, the prototype model, prototype methodology example, prototype cycle, types of prototype in hci, prototyping model of software development is well suited for mcq, rapid throwaway prototype, types of software prototyping, the prototyping model of software development, system prototyping methodology, structured evolutionary prototyping model, types of prototyping in system analysis and design, use of prototype, prototype development methodology, software rapid prototyping, prototype waterfall model, explain software prototyping, sdlc model prototype, waterfall prototype, rapid prototype tooling, prototyping model of software development are basically performed, types of prototypes in software engineering, rapid prototyping life cycle model

Advantages of Prototype Model:-

1. If user is not satisfied with the prototype, Then the developer will create a new prototype again.

2. Customer feedback is always available for better better system.

3. It take's less time to finish the project, because once we have don the requirement analysis from the customer then, it will take less time to develop the project.

4. Error can be detected at earlier stage.

Dis-Advantages of Prototype Model:-

1. It is totally depended on the prototype.

2. Sometime it takes very long time to develop the prototype based on the user requirement.

3. The developer can try to re-use the prototype in another project even the project is feasible.

Spiral Model:- Removed risks.

✱ Spiral model was developed by "Barry Boehm" in the year 1986 as a part of Software Engineering Institute (SET).

✱ It is called meta module (Model about model), because it contains all the life cycle model.

✱ The main purpose of the spiral model is introduced to remove risks and a feature added with name Risk Analysis.

✱ One business analyst is required to reduce the risk with the help of developer and client, then we can say how much cost it will take to develop.

✱ This model is mainly suitable for large and complex project.

✱ It is call as spiral model because the same activities are repeated for all the loops.

✱ Each Spiral or Loop represents the software development process.

Figure of Spiral Model:-

spiral model, spiral model in software engineering, the spiral model was originally proposed by, the spiral model of software development, spiral methodology, spiral method, spiral model was originally proposed by, spiral development, the spiral model of software development mcq, spiral model example, spiral model of software development, spiral model diagram, spiral model sdlc, explain spiral model, spiral development model, spiral model phases, spiral diagram, spiral life cycle model, the spiral model, spiral process model, boehm's spiral model, spiral model proposed by, the spiral model of software development is, spiral sdlc, spiral software development, spiral model in software testing, explain spiral model in software engineering, the spiral model of software development is mcq, explain spiral model in detail, in the spiral model of software development the primary determinant, a spiral model of software development and enhancement, spiral model in software engineering ppt, spiral model ppt, spiral model adalah, define spiral model, spiral project management, spiral development methodology, spiral model of software development mcq, win win spiral model in software engineering, risk analysis in spiral model, barry boehm spiral model, spiral model methodology, spiral model steps, spiral software process model, spiral development process, in spiral model of software development the primary determinant, spiral waterfall model, spiral model in software project management, spiral process model in software engineering, risk management in spiral model, spiral model stages, boehm model in software engineering, incremental commitment spiral model, risk handling in spiral model, spiral model applications, boehm's spiral model in software engineering, agile system development and spiral models, example of spiral model in software engineering, spiral model guru99, phases of spiral model in software engineering, mcq on spiral model in software engineering, spiral model testing, spiral agile, agile spiral, explain the spiral model of software development, spiral view of requirement engineering process, spiral model software, spiral product development process, agile spiral model, with suitable illustration explain spiral model evolutionary software development, spiral waterfall, spiral model for game development, spiral method software development, spiral model in software engineering examples, winwin spiral model in software engineering, spiral system development life cycle, spiral model explain, spiral model example in software engineering, spiral project management methodology, agile and spiral model, software development life cycle spiral model, spiral model project management, spiral model risk management, spiral software development life cycle, waterfall spiral agile, spiral model phases in software engineering, about spiral model, spiral method in software engineering, spiral model in embedded system, waterfall model spiral model, spiral model application, spiral model in project management, spiral development model in software engineering, sdlc model spiral, spiral software development methodology, the incremental commitment spiral model, describe the spiral model of software development, spiral model systems engineering, boehm spiral model software development, spiral design model

Advantages of Spiral Model:-

1. Risks are analyzed at the earlier stage of the project development.

2. It is very famous model to develop the large and complex projects.

3. The best technology is used in the spiral model.

4. Customer is always available, so we get feedback regularly at anytime.

Dis-Advantages of Spiral Model:-

1. The cost of the project will be higher because, system analyst is required to analyze the risk.

2. It is not suitable for small projects.

3. Each loop contains four quadrant, so it takes more time to complete.

What is SRS-?

✱ SRS stands for "Software Requirement Specification". A document prepared by the business analyst or system analyst. It describes what will be the features of software and what will be its behavior, i.e, how it will perform.

✱ It is detailed description of software system to be developed with its functional and non-functional requirement.

✱ The SRS consist of all the requirements required for the project development.

✱ In order to get all the details of software from customer and to write the SRS document system is required.

✱ SRS document is actually an agreement between the client and developer.

Part of SRS:-

1. Functional Requirement of the system

2. Non-functional Requirement of the system

3. Goal of implementation

Characteristics of SRS Document:-

✱ Complete:- The SRS document must be completed by taking all the requirement related to software development.

✱ Consistent:- It should be easy to understand from the beginning to the ending, so that user can understand easily that what is the requirement and consistency can be achieved only when there is no conflict between the two requirements.

✱ Testable:- The entire software or the individual model of the software must be testable.

✱ Feasible:- All the requirement included is SRS document must be feasible to implement.

✱ Modified:- The SRS document must be created in such a manner that it should be modifiable.

✱ Correct:- The all the requirements given in the SRS document should be correct. So, we can easily implement in software part.

✱ Verifiable:- All the documents of the SRS must be verified.

✱ Unambiguous:- The module of the software must be unambiguous so one module is compatible with another module.

Note:- Without a proper SRS document, it is very difficult to create a software and maintenance for the engineer.

Author Description