List of system quality attributes

Within systems engineering, quality attributes are non-functional requirements used to evaluate the performance of a system. These are sometimes named "ilities" after the suffix many of the words share. Notable quality attributes include:

Many of these quality attributes can also be applied to data quality.

Common Subsets

• A subset of them (reliability, availability, serviceability, usability, and installability) are together referred to as RASUI.
• Another subset used for software requirements (functionality, usability, reliability, performance, supportability) are together referred to as FURPS.
• Agility in working software is an aggregation of seven architecturally sensitive attributes (debuggability, extensibility, portability, scalability, securability, testability, understandability).
• For databases RASR is an important concept (reliability, availability, scalability, and recoverability).
• Also, ACID for atomicity, consistency, isolation (sometimes integrity), durability.
• When dealing with safety-critical systems, the acronym RAMS (reliability, availability, maintainability and safety) is frequently used.
• Dependability is an aggregate of Availability, Reliability, Safety, Integrity, and Maintainability.
  • Integrity depends on Security and Survivability.
  • Security is a composite of Confidentiality, Integrity, and Availability. (Security and Dependability are often treated together.)

See also

• Information quality
• ISO/IEC 9126 Software engineering—product quality
• Cognitive dimensions of notations
• Software quality

Further reading

• Erl, Thomas (2008), "SOA: Principles of Service Design", Prentice Hall, NJ.
• Gitzel, Korthausa, Schadera (2007). "Using established Web Engineering knowledge in model-driven approaches". Science of Computer Programming 66(2), 30 April 2007, 105–124.