Another of the many types of software maintenance in software engineering is corrective maintenance. Aug 16, 2017 the software development landscape changes constantly. As you may expect, there are a number of subcategories of software engineering. The utility types of software in software engineering are the software that are used to keep the system at tip top shape. Understanding the different types of changes your software can go through is important to realize that software maintenance is more than just bug fixing. S o f t w a r e m a i n t e n a n c e types of software. As a result there are a number of specialties and types of software engineering degrees. Types of maintenanceall maintenance activities have been grouped under four classes.
Software engineers apply the principles of software engineering to the design, development, maintenance, testing, and evaluation of software. Types of maintenance in a software lifetime, type of maintenance may vary based on its nature. If the software must be ported to another platform without any change in functionality, this process will be used and a maintenance project team is likely to be assigned to this task. The software engineering methods and tools used depend on the type. Generally, software engineering is extremely dependent on a smooth process in order to prevent bugs and have the most optimal code for running software. New areas of specialization, technologies, and methodologies pop into existence every few months, forged by the relentless innovation of the software industry. The primary objective of software maintenance is to make the software system operational according to the user requirements and fix errors in the software. Software engineering methods rely on a set of basic principles that govern each area of the technology and include modeling activities and other descriptive techniques. If you continue browsing the site, you agree to the use of cookies on this website. If done poorly, it leads to high maintenance cost and user dissatisfaction 4. Software reengineering is a process of software development which is done to improve the maintainability of a software system. Problems arise when a software generally exceeds timelines, budgets, and reduced levels of quality.
Mar 17, 2017 software engineering software process and software process models part 2. There are four types of maintenance, namely, corrective, adaptive, perfective, and preventive. Importance of maintenance rates of software engineering failure requirements very high. Various maintenance predictions and the questions associated with them. Software engineering process is the glue that holds the technology layers together and enables rational and timely development of computer software.
Software engineering cse btech notes cse btech notes. Powerpoint presentation on software testing powerpoint. For full details of each course presentation content and pdf book please follow the links in the list below for the individual items. Software engineering is a detailed study of engineering to the design, development and maintenance of software.
Ieee defines architectural design as the process of defining a collection of hardware and software. It is become important since several software products lack of documentation and are highly unstructured. Categories of software maintenance there are four types. It is aided with version control tools to control versions, semiversion or patch management. With it, terms to describe specialized types of developers become part of the unofficial industry lingo and show up in job ads and. Often we employ programs created using the best design and techniques at their time, when program size and storage space were principal components. It helps the project manager to further predict the effort and time which will be needed to build the project. The ieees guide to the software engineering body of knowledge 2004 version, or swebok, defines the field and describes the knowledge the ieee expects a practicing software engineer to have. Swebok kas closely related to this software engineering process ka include software engineering management, software engineering models and methods, and software quality.
Estimation of the size of software is an essential part of software project management. These concepts are not always easy to understand or. The ieee also promulgates a software engineering code of ethics. Gadakh from the department of computer engineering at international institute of information technology, i. Cmm defines key activities required at different levels of process maturity. Need for software maintenance maintenance to repair software faults changing a system to correct deficiencies in the way meets its requirements. The purpose of software maintenance is defined in the international standard for software maintenance. Department ofcommerce nationalbureau ofstandards computerscience andtechnology nbs buctons natlinst. 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. Software engineering was introduced to address the issues of lowquality software projects. In fact, a study suggests that over 80% of software change is attributed to non bug related changes. Corrective maintenance of a software product may be essential. Software software is a set of instructions or programs written by programmersdevelopers on various languages for computer to perform some specific task software is. Software maintenance software maintenance in software engineering is the modification of a.
Reverse engineering reverse engineering is the process followed in order to find difficult, unknown and hidden information about a software system. The objective of software maintenance is to modify existing software while preserving its integrity. Download 17 maintenance ppt, maintenance powerpoint. The modification of a product, after delivery, to correct faults, to improve performance or other attr. Categories of software maintenance maintenance can be divided into the following. We provided the download links to software engineering notes pdf for b. The foundation for software engineering is the process layer. Effective software testing helps to deliver quality software products that satisfy users requirements, needs and expectations.
The migration process is exceptional, and is not part of daily maintenance tasks. Software engineering architectural design introduction. Software maintenance software quality ngineering exactl d h f h ly does the software have. A program is an executable code, which serves some computational purpose. Software engineering tools provide automated or semiautomated support for the. Software maintenance 4 type ka hota h bo iss video m btaya gya h in hindi by aayushi saxena. It is study and application of engineering to design, development and maintenance of the software. Sometimes, maintenance also involves adding new features and functionalities using latest technology to the existing software system. Engineering, architecting, design, implementation, testing. Definitions the act of keeping, or the expenditure required to keep, an asset in condition to perform efficiently the service for which it is used. Then there are those types of software maintenance in software engineering where, though it may seem like the software is being corrected, the reason for maintenance is actually to improve the performance and, of course, the maintainability of the phones software. Ppt software engineering process models powerpoint. Software maintenancesoftware maintenance a very essential activity. 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.
Maintenance introduction and types software engineering lectures hindi english duration. These slides, covering the topics of software maintenance and evolution, are. Software engineering project size estimation techniques. Nov 30, 2000 for slides, see lecture 20 lecture 24, legal issues powerpoint html lecture 25, management iii. Software engineering software process activities part 3. Powerpoint presentations on civil engineering civil ppt. Pressman has no specific chapter on maintenance, somerville has 15 pages out of 742 pages january. Types of software maintenance in software engineering.
Software maintenance is often considered to be an unpleasant, time consuming. Apr 16, 2020 the abovementioned software testing types are just a part of testing. Software maintenance in software engineering is the modification of a software product after delivery to correct faults, to improve performance or other attributes a common perception of maintenance is that it merely involves fixing defects. Adaptive maintenance is concerned with the change in the software that takes place to make the software adaptable to new environment such as to run. Generally, it service providers suggest their clients to go for software maintenance services for the consistent and enhanced performance of the system. This includes modifications and updations when the customers need. Any glitches and bugs discovered in the software are corrected so that users can use the software and. For example, the percentage of time that you spend in each of the four maintenance types gives you an idea of the maturity and skill level of your software engineering organization.
Software engineering architectural design geeksforgeeks. The system types of software in software engineering are the software that are used by computer systems to manage the hardware components that are there. Software maintenance, understanding the 4 types coderhood. Nov 27, 2016 what is the purpose behind the software maintenance. The outcome of software engineering is an efficient and reliable software product. They are the ones that are used to maintain the system as well. Categories of software maintenance software testing software. It can also give you an idea of the maturity level of your product and codebase. 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 maintenance software evolution software types laws of. Software maintenance the first law of software engineering no matter where you are in the system life cycle, the system will change, and the desire to change it will persist throughout the life cycle bersoff et al. Software engineering software process and software process. Corrective maintenance this type of maintenance is initiated by defects in software.
Enhancing maintainability many activities during software development. Software maintenance maintenance and the sdlc in the waterfall software development lifecycle, we had a nice little box at the end of the process and one which was generally ignored in descriptions of the process in more advanced lifecycles such as the spiral model, maintenance was accorded a much more prominent place still, maintenance is a relatively neglected aspect of the sdlc examples. Tech 2nd year software engineering books at amazon also. Fritz bauer, a german computer scientist, defines software engineering. The software needs the architectural design to represents the design of software. There is much discussion about the degree of education and or certification that should be required for software. Modification of a software product performed after delivery to keep a software.
Adaptive maintenance is the implementation of changes in a part of the system, which has been affected by a change that. Five types of maintenance are in fact recurrent in the industry. However, one study indicated that over 80% of maintenance. Software engineering shares common interest with other engineering disciplines. Types of software in software engineering types of. Software engineering tutorial 2 1 the application of a systematic, disciplined, quantifiable approach to the development, operation, and maintenance of software. It may be just a routine maintenance tasks as some bug discovered by some user or it may be a large event in itself based on maintenance. 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 ll we implement the design ur code is correct. Managing people powerpoint html lecture 26, risks in software engineering powerpoint html lecture 27, software. Software design methodologies and testing department of computer engineering this presentation is about software design methodologies and testing. Very often in practice we use programs with poorly designed structures, poor coding, poor logic, and poor documentation. 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. So i have covered some common types of software testing which are mostly used in the testing life cycle. Four general types of maintenance philosophies can be identified, namely corrective, preventive, riskbased and conditionbased maintenance.
Validation and verification powerpoint html lecture 23, tools for debugging ii for slides, see lecture 20 lecture 24, legal issues powerpoint html lecture 25, management iii. Managing people powerpoint html lecture 26, risks in software engineering powerpoint html lecture 27, software engineering as engineering powerpoint html. Software engineering capability maturity model cmm. Maintenance management configuration management is an essential part of system maintenance. Process models in software engineering walt scacchi, institute for software research, university of california, irvine february 2001 revised version, may 2001, october 2001 final version to appear in, j. If you continue browsing the site, you agree to the use of. Software re engineering allow us to translate source code to new language, restructure our old code, migrate to a new platform such as clientserver, capture and then graphically display design information, and redocument poorly documented. Software is considered to be a collection of executable. Topics in software e sf r i software requirements wh what e to do. Why software testing it is important as it cause impact on operational performance and reliability if not done properly.
The three types of software in software engineering are the system software, utility software, and applications software. 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. Software maintenancesoftware maintenance a very essential activity 2. We need our software to work smooth while integrating to multiple other tools, frameworks, features, functionalities, etc. Pdf maintenance and its types engr sajid chaudhary. Mar 18, 2017 software specification or requirements engineering is the process of understanding and defining what services are required and identifying the constraints on these services. Software engineering software maintenance geeksforgeeks. Corrective maintenance is concerned with fixing errors that are observed when the software is in use. Software engineering, 6th edition, ian sommerville, addisonwesley, isbn 0209815x. Software maintenance the first law of software engineering no matter where you are in the system life cycle. Software maintenance prediction refers to the study of software maintainability, the modifications in the software system, and the maintenance costs that are required to maintain the software system. The bedrock that supports software engineering is a quality focus. The most current swebok v3 is an updated version and was released in 2014. Software engineering diversity there are many different types of software system and there is no universal set of software techniques that is applicable to all of these.
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