Large software it is easier to build a wall than to a. Old system starts as a specification for new system. 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. A software might seem costly as it needs some upfront investment involving subscription fees, but it comes along with many benefits. A free powerpoint ppt presentation displayed as a flash slide. The logical characteristics of each interface between the software product and its. Characteristics, controlling factors, maintenance tasks, side effects, preventive maintenance re engineering reverse engineering configuration management maintenance tools and techniques. Similarly, developers involved in designing, coding, and maintenance of the software evaluate the software by looking at its. When people shed thousands of bucks on software, they expect it to conform to their needs both present and future. To address this issue and the other maintenance issues presented above, we propose a maturity model for software maintenance modeled after the cmmi of the software engineering institute sei02. Introduction software maintenance is the last stage of sw life cycle. Maintenance planning and scheduling maintenance planning and scheduling in order to see maintenance planning and scheduling we need to see it in context of the organisational systems.
We need to see the role of maintenance within an organisation. Preventive maintenance involves performing activities to prevent the occurrence of. Software engineering software maintenance geeksforgeeks. The modification of a product, after delivery, to correct faults, to improve performance or other attr. The data on which the program operates is also considered as part of the software. Since maintenance accounts for nearly 70% of the cost of the software life cycle schach 1999, the importance of this quality characteristic cannot be overemphasized. You can schedule each item for recurring service periods. Thus, the time required to reestablish system operation following a software failure. Legacy system characteristics legacy system characteristics. All the aspects of optimizing the interface with the person who must use the system this is a description of how the system will interact with its users.
Department ofcommerce nationalbureau ofstandards computerscience andtechnology nbs buctons natlinst. The swebok definition, generally accepted by software researchers and practitioners, is as follows. It stands for all the modifications and updations done after the delivery of software product. S o f t w a r e m a i n t e n a n c e reasons for maintaining.
Indeed,theemphasishas oftenbeen to getthe program upand runningwithout being hindered by guidelines, methodologies, or othercontrols. These engineering based factors of the relate to interior quality of the software like efficiency, documentation and structure. A free powerpoint ppt presentation displayed as a flash slide show on id. The root cause of this expense is the degraded structure that results from prolonged maintenance. Its main purpose is to modify and update software application after delivery to correct faults and to improve performance. Software is defined as collection of computer programs, procedures, rules and data. 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.
Since maintenance accounts for nearly 70% of the cost of the. Refers to the ability of the software to provide desired functionality under the given conditions. Very often in practice we use programs with poorly designed structures, poor coding, poor logic, and poor documentation. A common perception of maintenance is that it merely involves fixing defects. A software product needs maintenance to support the new features that the users want or to change different types of functionalities of the. If you like geeksforgeeks and would like to contribute, you can also write an article using contribute. It includes new features, new user requirements for refining the software and improve its reliability and performance.
Extraction and considering the factors affecting the software maintenance cost help to estimate the cost and reduce it by controlling the factors. Software engineering software maintenance software maintenance is the process of modifying a software product after it has been delivered to the customer. For example, users want the software to perform according to their requirements. There are number of reasons, why modifications are required, some of them are briefly mentioned below. Isoiec defines maintainability as one of the quality characteristics. Software process models characteristics normally, specifications are incompleteanomalous very blurred distinction between specification, design and manufacturing no physical realization of the. Jan 22, 2019 a software might seem costly as it needs some upfront investment involving subscription fees, but it comes along with many benefits. Oct 25, 2012 software maintenance cost is increasingly growing and estimates showed that about 90% of software life cost is related to its maintenance phase. Typical features include minmax monitoring, reorder points, and advanced inventory reporting. This process contains search out for errors in code and correct them. A program is an executable code, which serves some computational purpose. To put maintenance in its proper perspective requires considerable skill and experience, and in an important and ongoing aspect of system development. You must be selfmotivated, organized, trustworthy, empathetic and optimistic.
What to look for in maintenance management software advanced inventory provides inventory management features beyond just tracking stocking levels. A true leader has a clear vision of where they want the maintenance team to go and they set a positive example that encourages others to follow. Equipment maintenance best practices basics, objectives. The issues can be occurred in hardware, operating systems or any part of software. Similarly, competing with software developers for resources is a constant battle. This free business ppt template can be used to create. Thus, the time required to reestablish system operation following a software failure is used as the repair or recovery rate in the modeling of software elements of combined hwsw elements. There are four types of maintenance, namely, corrective, adaptive, perfective, and preventive. In software engineering, these activities are known as software maintenance cf. Software characteristics are classified into six major components. Some of the constituted items of software are described below. Modification requests are logged and tracked, the impact of proposed changes is determined, code is modified, testing is. Market conditions policies, which changes over the time, such as taxation and.
Software maintenance is a part of software development life cycle. The software maintenance process model alain april1, jane huffman hayes. First we identify the software maintenance unique activities. This free business ppt template can be used to create nice maintenance powerpoint presentations including computer maintenance or support as well as auto parts or car repair presentations. The main purpose of software maintenance is to modify and update software application after delivery to correct faults and to improve performance. 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. Software maintenance software maintenance is the process of changing a system after it has been delivered. Software maintenance is expected to proceed in parallel with ongoing system operation following a software failure.
Implementation and software maintenance authorstream. Software maintenance is the process of modifying a software product after it has been delivered to the customer. Software engineering software characteristics geeksforgeeks. 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. Very often in practice we use programs with poorly designed structures, poor coding, poor logic, and poor documentation often we employ. Software, when made for a specific requirement is called software product. Software maintenance, defines software maintenance in the same terms as isoiec 12207 and places emphasis on the predelivery aspects of maintenance, e. Software process models characteristics normally, specifications are incompleteanomalous very blurred distinction between specification, design and manufacturing no physical realization of the system for testing software does not wear out maintenance does not mean component replacement. The logical characteristics of each interface between the software product and its users. Dec 03, 2014 more commonly known as software reengineering. Modifying a program after it has been put into use. The cmms features needed in maintenance software to reduce maintenance costs and improve asset utilization. Equipment maintenance best practices asset tracking software. Software maintenance provides unique technical and management challenges for software engineersfor example, trying to find a fault in software containing a large number of lines of code that another software engineer developed.
The program or code itself is definitely included in the software. Maintenance management software visit the maintenance maven blog. The need of software engineering arises because of higher rate of change in user requirements and environment on which the software is working. The adobe flash plugin is needed to view this content. Closely related concepts in the software engineering domain are evolvability. S o f t w a r e m a i n t e n a n c e introduction software maintenance is the modification of a software product after delivery to correct faults, to improve performance or other attributes. The software maintenance process focusses on fixing errors, recovering from failures, such as hardware failures or incompatibility of hardware with software and accommodating changes in the operating system and the hardware. Software is considered to be a collection of executable programming code, associated libraries and documentations. Preventive maintenance involves performing activities to prevent the occurrence of errors. Maintainability features must be incorporated into the software development effort to reduce life.
Closely related concepts in the software engineering domain are evolvability, modifiability, technical debt, and code smells. Corrective maintenance is concerned with fixing errors that are observed when the software is in use. Finally, the last maintenance process, also an event which does not occur on a daily basis, is the retirement of a piece of software. Software maintenance sustains the software product throughout its life cycle. Equipment maintenance software allows you to mass import asset data on to a cloud based platform. Software maintenance is that last step in the software development life cycle that does not get its fair share of attention. Maintenance powerpoint template is a free theme for powerpoint or templates power point background that you can download for your presentations. S o f t w a r e m a i n t e n a n c e 11 cost of software maintenance software maintenance 12.
Fiixs cmms software features, information, and overview. Well designed software should be flexible enough to accommodate future changes that will be needed as new requirements come to light. Software engineering lecture 20 software maintenance. Similarly, developers involved in designing, coding, and maintenance of the software evaluate the software by looking at its internal characteristics, before delivering it to the user. Introduction to software engineering presentation transcript. These factors should be inbuild in any good software.
Ppt on introduction to software engineering powerpoint. Software maintenance is the general process of changing a system after it has been delivered. Often we employ programs created using the best design and techniques at their time, when program size and storage space were principal components. Software maintenance is widely accepted part of sdlc now a days. Ppt maintenance,types of maintenance,breakdown maintenance. Items that are intended to stay in as part of your document are in. Perfective maintenance accounts for 50%, that is, the largest of all the maintenance activities. In addition, software maintenance serves the following purposes. Basic software maintenance includes optimization, error correction, and enhancement of existing features, which combine together to make the.
Large software it is easier to build a wall than to a house or building, likewise, as the size of software become large engineering has to step to give it a scientific process. Aug 09, 20 introduction to software engineering presentation transcript. Ppt software maintenance powerpoint presentation, free. Software maintenance understanding the 4 types endertech. 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. Which factors affect software projects maintenance cost more. Adaptive maintenance is concerned with the change in the software that takes place to make. Software engineering software process activities part 3. Maintenance of the software should be easy for any kind of user. Refers to the degree of performance of the software against its intended purpose. In maintenance management, bug fixing comes at priority to run the software seamlessly. Objectives to understand software process and process models, including the main characteristics of.
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