Software Testing And Project Management Notes PdfBy Enmanuel V. In and pdf 29.03.2021 at 06:59 10 min read
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- Software Engineering & Project Management
- Software Project Management
- Project Planning in Software Engineering
Software Engineering & Project Management
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Views Total views. Actions Shares. No notes for slide. Notes of Software engineering and Project Management 1. Hence, it does not die and can be considered immortal. Examples are traffic management systems, process control systems, hospital management systems etc. It consist of four layers shown in figure, hence it is called a Layered Technology. Unit I, SEPM Truba College of Science and Technology, Bhopal By: Nandini Sharma Page 2 Software Process is a set of activities, together with ordering constraints among them, such that if the activities are performed properly and in accordance with the ordering constraints, the desired result is produced.
The desired result is high-quality software at low cost. Software Product is a development project in which a software process is used or outcomes of a software project. Predictability of a process determines how accurately that outcome of following process in a can be predicted before the project is completed. If process is not predictable, then it is of limited use.
The second important effort is the testing, which consumes most resources during development. To satisfy the engineering objectives of quality improvement and cost reduction, the software process must be improved because 3. Software Process Model for software engineering is chosen based on the nature of the project and application, the methods and tools to be used, and the controls and deliverables that are required.
All software development can be characterized as a problem solving loop show in figure in which four distinct stages are encountered: status quo, problem definition, technical development and solution integration. Software Development Life Cycle SDLC is the process of developing software through business needs, analysis, design, implementation and maintenance. Software has to go through various phases before it is born which are as follows: 4.
For example, a Pizza Hut may need software to sell pizza. An Indian store may need software to sell its newly arrived movies or grocery. The owner of the company feels that he needs software that would help him in tracking his expenses and income as well as enhance the selling process.
This is how the concept is generated. The owner will specifically tell the software company what kind of software he would need.
In other words, he will specify his requirements. Requirements analysis — After the owner user knows his requirements, then it is given to a software team company who will analyze the requirement and prepare requirement document that will explain every functionality that are needed by the owner.
The requirement document will be the main document for developers, testers and database administrators. In other words, this is the main document that will be referred by everyone. After the requirement documents, other detailed documents many be needed. For example, the architectural design which is a blueprint for the design with the necessary specifications for the hardware, software, people and data resources.
Development: After the detailed requirement documents some companies have design documents instead of requirement documents , the developers start writing their code program for their modules. Testing: Once the code programs are ready, they are compiled together and to make a build. This build is now tested by the software testers QA Testers Production: After testing, the application software goes into production meaning, it will be handed over to the owner. End: And one day, the owner will have say bye to the software either because the business grows and this software does notmeetthe demand or for some reason,the he does not need the software.
Linear sequential model suggests a systematic, sequential approach to software development. It begins at the system level and progress through analysis, design, coding, testing and support. This system view is essential when software must interact with other elements such as hardware, people and databases. Software requirements analysis: The requirements gathering process is intensified and focused specifically on software.
Design: Software design is actually a multistep process that focuses on four distinct attributes of a program: data structure, software architecture, interface representations and procedural detail. The design process translates requirements into a representation of the software that can be assessed for quality before coding begins.
Code generation: The design must be translated into a machine-readable form. The code generation step performs this task. Testing: Once the code has been generated, program testing begins. The testing process focuses on the logical internals of the software, ensuring that all statements have been tested and on the functional externals, that is, conducting tests to uncover errors and ensure that defined input will produce actual results that agree with the required results.
Prototyping Model begins with requirements gathering. Developer and Customers meet and define the overall objectives of the software, identify whatever requirements are known and identify the areas which require further definition.
In many instances the client only has a general view of what is expected from the software product. In such a scenario where there is an absence of detailed information regarding the input to the system, the processing needs and the output requirements, the prototyping model may be employed. This model reflects an attempt to increase the flexibility of the development process by allowing the client to interact and experiment with a working representation of the product.
They fail to realize that no consideration was given to the overall quality of the software in the rush to develop the prototype Waterfall model uses the classic approach towards software development.
It uses linear and sequential approach in software design as well as development. The progress of the software is steady downward flow, similar to that of a waterfall. This model originated in the manufacturing and construction industry. It flows a highly structured pattern, where the changes to the model after the phase in the waterfall model life cycle has passed often prove to be very costly.
This model was adapted initially for software development, as no other model was available at that time. The phases in the waterfall model in software engineering are looked upon as separate process in itself. After the phase is over, there is no going back to the phase. The waterfall model examples prove to be of immense help in understanding the model better.
Requirement Specification and Analysis Phase is the first phase in the waterfall software development model. It is in this phase that all the requirements from the user are captured. Analysis of the requirements is carried out to find out the possibility and validity of the requirements, which helps in assessing if the requirements can be incorporated in the system.
In this phase it is important that the purpose of the system and the target audience be taken into consideration, so that the chances of the system going wrong are minimized. At the end of the phase, requirement specification document is made. This document is like a guide to the next phases of the model. Design Phase is one of the important waterfall model phases.
In this phase the software to be developed is designed. The specifications of the system are taken into consideration and on the basis of the study of the specification the system design is made. Along with the software requirements, the hardware requirements and the other system requirements are also decided in this phase. In short the entire system architecture is chalked out. If this phase has to be summed up in one line, we can say that this phase provides the answer to the question 'how', which was created after the answer to the question 'what' from the previous phase found.
Implementation is third phase in the waterfall model diagram is the implementation phase. In this phase the actual software is developed.
There is unit testing carried out after the particular module has been developed as well. Carrying out the tests in this phase often proves to be beneficial, as the problems in the system are identified early into the software development phase.
Software Project Management
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Project Planning in Software Engineering
A project is well-defined task, which is a collection of several operations done in order to achieve a goal for example, software development and delivery. A Project can be characterized as:. A Software Project is the complete procedure of software development from requirement gathering to testing and maintenance, carried out according to the execution methodologies, in a specified period of time to achieve intended software product. Software is said to be an intangible product.
A Software Project is the complete methodology of programming advancement from requirement gathering to testing and support, completed by the execution procedures, in a specified period to achieve intended software product. Software development is a sort of all new streams in world business, and there's next to no involvement in structure programming items. Most programming items are customized to accommodate customer's necessities. The most significant is that the underlying technology changes and advances so generally and rapidly that experience of one element may not be connected to the other one. All such business and ecological imperatives bring risk in software development; hence, it is fundamental to manage software projects efficiently.
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Before starting a software project, it is essential to determine the tasks to be performed and properly manage allocation of tasks among individuals involved in the software development. Hence, planning is important as it results in effective software development. Project planning is an organized and integrated management process, which focuses on activities required for successful completion of the project. Project planning also helps in better utilization of resources and optimal usage of the allotted time for a project.