Maintenance introduction and types software engineering lectures hindi english. There are 9 types of maintenance split between preventive maintenance and corrective maintenance. Corrective maintenance aims to correct any remaining errors regardless of. Software testing also helps to identify errors, gaps or missing. Once the individual units or components are tested by developers as working then testing team will run tests that will test the connectivity among these unitscomponent or multiple unitscomponents. By doing so, test cases are absolutely needed to evolve and change accordingly. Maintenance of software systems comes in four different types. 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 the software on a new operating system. The abovementioned software testing types are just a part of testing. So prioritization plays an continue reading types of risks in software testing. All defects found during testing must undergo a retest process in order to eliminate the flaws. The approach in corrective maintenance is to locate the original specifications in order to determine what the system was originally designed to do. Overview the big picture all software problems can be termed as bugs. There are four types of maintenance, namely, corrective, adaptive, perfective, and preventive.
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. A software bug usually occurs when the software does not do what it is intended to do or does something that it is not intended to do. The deployment should be done once the testing was. Understanding the different types of changes your software can go through is important to realize that software maintenance is more than just. In a software lifetime, type of maintenance may vary based on its nature. First one is, testing the changes that has been made because of the correction in the system or if the system is extended. Software testing metrics, which are also known as software test measurement, indicates the extent, amount, dimension, capacity, as well as the rise of various attributes of a software process and tries to. Maintenance introduction and types software engineering. Software maintenance questions and answers sanfoundry. Software engineering software maintenance javatpoint. Testing may also be accomplished inside a temperature test chamber in order to.
There are five common types of maintenance triggers. The five most common types of maintenance triggers. Testing that is provided during this phase is called maintenance testing. Time based maintenance, failure finding maintenance, risk based maintenance, condition based maintenance and predictive maintenance. Have you worked on all the risks in your test plan.
This video is for a project in my cs 5704 class at virginia tech. However, one study indicated that over 80% of maintenance effort is used for noncorrective actions. Testing process is the last stage while completing a software project, hence testers are always under enormous pressure and time is limited for them. Additionally, finding time to test is often difficult. Corrective maintenance is concerned with fixing errors that are observed when the software is in use. As engineers we love to build things, but will our creations stand the test of time.
First, more than half the effort in software development is devoted to activities related to testing, including test design, execution, and evaluation. Are you currently working on developing new test plan for your software project or software testing. Software maintenance in software engineering is the modification of a software product after. Once the requirements are fixedagreed upon, the development team starts building the code to create the required product. Istqb software testing certification is it worth it. All other options are known as levels of software testing which further have types of software.
Software engineering software maintenance geeksforgeeks. How to plan for software maintenance the startup medium. Confirmation maintenance testing during this part of maintenance testing the modifications and errors are tested and retested until its execution becomes flawless. It involves execution of a software component or system component to evaluate one or more properties of interest. Testim includes smart locators to keep tests stable and reduce maintenance. Software maintenance in software engineering tutorial 16. The testing done during this enhancement, change and migration cycle is known as maintenance testing. Preventive maintenance involves implementing changes to prevent the occurrence of errors. The test stand acts as a fluid supply source and can be adjusted to supply the required fluid at the flows, pressures, and temperatures necessary for the test.
The modification of the software to match changes in the ever changing environment, falls under which category of software maintenance. Oat is a common type of nonfunctional software testing, used mainly in software development and software maintenance projects. In the event of a system failure due to an error, actions are taken to restore the operation of the software system. Once the software is deployed in operational environment it needs some maintenance from time to time in order to avoid system breakdown, most of the banking software systems needs to be operational 247365. Software testing is defined as an activity to check whether the actual results match the expected results and to ensure that the software system is defect free. Software maintenance release management software release management, also known as software configuration management, is the management of activities surrounding release of one or more. The testing of software is an important means of assessing the software to determine its quality. The real actual equipment condition is continuously assessed by the online detection of significant working device parameters and their automatic comparison with average values and performance. Flaws in specifications, design, code or other reasons can cause these bugs.
Maintenance based on the equipment performance monitoring and the control of the corrective actions taken as a result. Software testing is broadly categorised into two types functional testing and nonfunctional testing. Perfective maintenance is concerned with the change in the software that occurs while adding new functionalities in the software. Its main purpose is to modify and update software application after delivery to correct faults and to improve performance. Preventive maintenance is done before a failure occurs and consists of maintenance types like. The main purpose of software maintenance is to modify and update software application after delivery to correct faults and to improve performance. The basic maintenance of equipment by its user or operator. Need for maintenance testing as the wishlist of the enduser increases in terms of new features that they would like to see in existing software, it becomes a compulsion for the software development firm to. Usually maintenance testing is consisting of two parts. This type of testing focuses on the operational readiness of the system to be supported, or to become part of the production environment. The platform also integrates with developer tools, allowing users to stay in their workflow to. Each phase of sdlc produces deliverables required by the next phase in the life cycle.
Software testing is the process of verifying a system with the purpose of identifying any errors, gaps or missing requirement versus the actual requirement. Testing for hydraulic equipment is usually performed with the help of complex test systems or test stands. If estimated the cost of maintenance, phasewise, it is noted that for all phases of sdlc, the average cost of software maintenance at all stages is more than 50% of the cost of software product. It accelerates testing by executing parallel, crossbrowser tests on testim or 3rd party grids. The aim is to ensure that the modification does not bring down the entire software. Its to maintain a level of certain service on equipment, programming or configuration if required and done by maitenance department.
Software maintenance is the process of modifying a software product after it has. What is the difference between testing and maintenance. On an average, the cost of software maintenance is more than 50% of all sdlc phases. Accommodate programs so that different hardware, software, system features. Testing should be done on a developed product based on the requirement. Artificial intelligence tools for software testing. Maintenance is carried out when certain indicators give the signaling that the. Software maintenance testing approaches to support test. First one is, testing the changes that has been made because of the correction in the system or if the system is extended or because of some additional features added to it. Software maintenance understanding the 4 types endertech.
Maintenance is carried out when certain indicators give the. Equipment is maintained before any fault occur or the equipment to be in working condition. The testing that is conducted during the enhancement stage or migration cycle of already deployed software is known as maintenance testing. Software maintenance testing there are two aspects to testing fixes and maintenance changes to a product. Coordinating tests when different members of the maintenance team are. When you hear the term software testing, do you think about one particular type of test such as functional testing or regression testing or do you immediately start visualizing the complex, interconnected web of test types and techniques that comprise the broad world of software testing most experienced developers understand that software testing isnt a. Software maintenance testing is essential during software testing phase. So i have covered some common types of software testing which are mostly used in the testing life cycle. Software maintenance is the process of modifying a software product after it has been delivered to the customer. Integration testing is one of the most common and important types of software testing.
Hi all, testing and maintenance are two separate, yet equally important phases of software development life cycle sdlc. This course will teach quantitative, technical, practical methods that software engineers and developers can use to test their software, both during and at the end of development. 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, understanding the 4 types coderhood. Every programmer is expected to do unit testing in parallel.
590 91 813 646 610 683 1160 1310 165 1407 1057 1306 277 102 1281 88 290 1598 1138 218 709 1321 1469 322 1542 689 1521 1080 732 496 474 623 1 639 65 1120 667 1162 691