12 February 2007

Software Engineering: Maintainability (Definitions)

"The ease of maintenance that a program’s author puts into the program by writing clear code." (Greg Perry, "Sams Teach Yourself Beginning Programming in 24 Hours" 2nd Ed., 2001)

"The characteristic of an information environment to be manageable at reasonable costs in terms of content volume, frequency, quality, and infrastructure. If a system is maintainable, information can be added, deleted, or changed efficiently." (Martin J Eppler, "Managing Information Quality" 2nd Ed., 2006)

"a measure of how quickly and effectively a CI/service can be restored to normal after a failure." (ITIL)

 Maintainability is defined as the probability that a system or system element can be repaired in a defined environment with defined resources within a specified period of time. Increased maintainability implies shorter repair times. (Created for SEBoK)

"The capability of the software product to adhere to standards or conventions relating to maintainability." (Software Quality Assurance)

"The ease with which a software product can be modified to correct defects, modified to meet new requirements, modified to make future maintenance easier, or adapted to a changed environment." (ISO 9126)

"The probability that a given maintenance action for an item under given usage conditions can be performed within a stated time interval when the maintenance is performed under stated conditions using stated procedures and resources." (ASQ)

"The process of testing to determine the maintainability of a software product." (ISTQB)

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IT Professional with more than 24 years experience in IT in the area of full life-cycle of Web/Desktop/Database Applications Development, Software Engineering, Consultancy, Data Management, Data Quality, Data Migrations, Reporting, ERP implementations & support, Team/Project/IT Management, etc.