Tech student with free of cost and it can download easily and without registration need. Tech subjects study materials and lecture notes with syllabus and important questions below. It is become important since several software products lack of documentation and are highly unstructured. Software development life cycle 19 maintenance maintenance phase of the sdlc is where problems faced upon the implementation are addressed, this also. Maintenance refers to the support phase of software development introduction of software engineering. The tools put a virtual product through a rigorous testing procedure such as crashing a car into a brick wall, or running for several years on a tarmac road before it becomes. Presentation on sdlc software development life cycle. Ansys offers engineering simulation solution sets in engineering simulation that a design process requires.
Phases of sdlc the phases of sdlc can vary somewhat but generally include the. These steps together define the cradletograve life cycle of the software project. Software maintenance is the process of modifying a software product after it has been delivered to the customer. Software engineering software maintenance geeksforgeeks. Change will occur because, errors have been encountered or to accommodate changes in its external. Powerpoint presentations on civil engineering civil ppt. So the term software engineering first introduced at a conference in late 1960s to discuss the software crisis. Ppt on sdlc models software prototyping systems theory. A project starts with initial development stage, and we then identify an explicit evolution stage. Problems arise when a software generally exceeds timelines, budgets, and. There are four fundamental phases in most, if not all, software engineering methodologies. Download 17 maintenance ppt, maintenance powerpoint. Like other engineering domains where a given problem for example, building a bridge can be solved by following a series of interrelated steps, the software development process also comprises a number of steps or phases.
The abbreviation of the software development life cycle is sdlc and is very vital for all the organizations or firms because with the aid of sdlc they can generate the highquality software. Introduction to software project management cits3220. The significance of maintenance phase in the software development life cycle has been discussed, highlighting the fact that maintenance contributes to a large extent in the software engineering process. Sdlc deliverables help state agencies successfully plan, execute, and control it projects by providing a framework to ensure that all aspects of the project are. Software engineering answer consider the cost of training. Presented by saptarshi dutta chowdhurymca, heritage institute of technology 2. Software development life cycle samanga amarasinghe.
These phases address what is to be built, how it will be built, building it, and making it high quality. The maintenance phase involves making changes to hardware, software, and. Software development and testing methodologies with pros. Reports suggest that the cost of maintenance is high. Robert glass, writer of the facts and fallacies of software engineering, when it comes to software, 60% costing is for maintenance. Reverse engineering reverse engineering is the process followed in order to find difficult, unknown and hidden information about a software system.
Ppt on requirement engineering powerpoint presentations. Topics in software e sf r i software requirements wh what e to do. The critical distinction between reengineering and new software development. Free sample powerpoints for maintenance, engineering. Modified program testing the fourth phase consists of testing the. Objectoriented and classical software the scope of.
Maintenance phase ffiec it examination handbook infobase. This lesson explains the process and outcomes of the maintenance. Describes strenght and weakness of various life cycle models. Concepts and practice software maintenance, it is the representation of those parts of the process specifically pertaining to the evolution of the software. Maintenance occurs whenever software is modified regardless of whether this takes place before or after installation of the software product. The maintenance phase is the final step in the software development life cycle. Software engineering processes a software engineering process is the model chosen for managing the creation of software from initial customer inception to the release of the finished product. Maintenance software will undergo change after it is delivered to the customer. Software design how to design software software development how wi software testing do we know o software maintenance software quality ngineering exactl d h f h ly does the software have the structure and layout of. Sdlc is the process that is used by the organizations for the advancement of the software which includes the design, implementation along with the testing and. Software focuses on the planning phase not enough functionality for project tracking, control and planadjustment no clear distinction between t he planning phase and post planning phase. The free samples above are from the powerpoints used for the training course maintenance planning and scheduling powerpoint series. Ppt software maintenance powerpoint presentation free. Generally, it service providers suggest their clients to go for software maintenance services for the consistent and enhanced performance of the system.
Also developed from its 3 day seminar, the full powerpoints from are 3 powerpoints for a total of 229 slclasses, plus a 41 page workbook. A program is an executable code, which serves some computational purpose. One of the largest efforts in software engineering has been the design of ada programming language. Introduction to software engineering the term software engineering is composed of two words, software and engineering. For example, if a webapplication system with multimedia capabilities has been developed, modification may be necessary in countries where screening of videos over the internet is prohibited. Companies in a wide variety of industries use ansys software. The overviews of software maintenance, its related problems have been discussed in this paper. Introduction it is the process used to identify the correctness,completeness and quality of developed computersoftware. Managing people powerpoint html lecture 26, risks in software engineering powerpoint html lecture 27, software engineering as engineering powerpoint html. Single or even multiple dev and testing methodologies can be chosen to have a more flexible and efficient end product. Requirement engineering software development life cycle divided into four phases namely vision, definition, development, and maintenance. Software engineering lecture 20 software maintenance. Software engineering was introduced to address the issues of lowquality software projects.
Sdlc the software development life cycle sdlc, or system development life cycle in systems engineering, information systems and software engineering, is the entire process of formal, logical steps taken to develop a software product. In this phase tester test the whole system and functionality. Software maintenance supports upgradations, if required, in a software system. Ppt on introduction to software engineering powerpoint. It is the longest phase of the software development life cycle process. Software engineering is a detailed study of engineering to the design, development and maintenance of software. Selecting an appropriate software development and testing methodology is a factor that lies at the core of the development and testing process. In the coding phase, tasks are divided into units or modules and assigned to the various developers. Software engineering institute sei has developed a comprehensive model to determine an organizations current state of process maturity the grading scheme determines compliance with a capability maturity model cmm. The application of a systematic, disciplined, quantifiable approach to the development, operation, and maintenance of software. Upgradations may be required due to changes in government regulations or standards. An effective preventive and proactivemaintenance program should take into consideration safety, the age of the equipment, operating environment, and the criticality of the asset. Pdf software evolution and the staged model of the software. This blog contains engineering notes, computer engineering notes,lecture slides, civil engineering lecture notes, mechanical engineering lectures ppt, engineering ppt free download engineering ppt pdf slides lecture notes seminars.
Course informationsyllabus pdf guidelines for all assignments pdf book. Objectoriented and classical software engineering eighth edition, wcbmcgrawhill, 2011 stephen r. Software engineering as defined by ieee the application of a systematic, disciplined, quantifiable approach to the development, operation, and maintenance of software. A study on estimating software maintenance found that the cost of maintenance is as high as 67% of the cost of entire software process cycle. Maintenance refers to the support phase of software.
Requirement analysis, test planning, test case development, test environment setup,test execution, test cycle closure. How to use precision maintenance work quality assurance for lasting machine health needed for worldclass machinery reliability 2day precision maintenance introduction ppt presentation with vital factors for lasting machine health and maintenance work quality control to get world class machinery health and reliability are explained. Each one of these stages has a different focus of activity. The need of software engineering arises because of higher rate of change in user requirements. Software is considered to be a collection of executable. Ppt on sdlc models free download as powerpoint presentation. Pdf software maintenance is concerned with modifying software once it has. Risks are invariably involved in software development and maintenance. Software design methodologies and testing department of computer engineering this presentation is about software design methodologies and testing. Software testing life cycle stlc is defined as a sequence of activities conducted to perform software testing. Therefore, the need for software reengineering may emerge in a company when it becomes clear that the scale of the changes required by the business process reengineering cannot be accommodated through normal program maintenance. The purpose of software maintenance is defined in the international standard for software maintenance.
Once the need for software engineering was identified and software engineering recognized as a discipline the late 1970s saw the widespread evolution of software engineering principles. These phases are analysis, design, implementation, and testing. Software engineering, 6th edition, ian sommerville, addisonwesley, isbn 0209815x. The concept generally refers to computer or information systems. If infrared scanning is the only form of preventivemaintenance approach thats been employed, equipment reliability and safety have been compromised.
Once the system design phase is over, the next phase is coding. A free powerpoint ppt presentation displayed as a flash slide show on id. For full details of each course presentation content and pdf book please follow the links in the list below for the individual items. Buy and save 30% on all our maintenance training powerpoint presentations, reliability, maintenance engineering and asset maintenance management training course content and maintenance pdf books. Introduction software maintenance is the last stage of sw life cycle.
All the other stages through which a software system must go analysis, specification, design, testing are all bundled together either into. During the vision phases, the focus is on why do we want to have this system. In this phase, developers start build the entire system by writing code using the chosen programming language. Software maintenance planning should begin with the decision to develop a new. For slides, see lecture 20 lecture 24, legal issues powerpoint html lecture 25, management iii. The objective of software maintenance is to modify existing software while preserving its integrity.
These phases broadly speaking are, investigation, analysis, design, build, test, implement, and maintenance and support. Information systems analysis and design 4847 10 maintenance phase. The main purpose of software maintenance is to modify and update software application after delivery to correct faults and to improve performance. Dont neglect electrical equipment maintenance efficient. Each phase is defined by its entry criteria, exit criteria, resources, deliverables and reports. Precision maintenance introduction training ppt presentation. Maintenance phase involves daytoday operation of the system, making modifications to improve performance, and correcting problems the term quality of service qos refers to the level of performance a computer system provides chapter 10. Cmm defines key activities required at different levels of process maturity. Software process software process defines the way to produce software. The chosen process usually involves techniques such as analysis, design, coding, testing and maintenance. On an average, the cost of software maintenance is more than 50% of all sdlc phases. Software engineering article about software engineering.
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