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  2. Key (music) - Wikipedia

    en.wikipedia.org/wiki/Key_(music)

    Key coloration is the difference between the intervals of different keys in a single non-equal tempered tuning, and the overall sound and "feel" of the key created by the tuning of its intervals. Historical irregular musical temperaments usually have the narrowest fifths between the diatonic notes ("naturals") producing purer thirds , and wider ...

  3. List of system quality attributes - Wikipedia

    en.wikipedia.org/wiki/List_of_system_quality...

    These are sometimes named architecture characteristics, or "ilities" after the suffix many of the words share. They are usually architecturally significant requirements that require architects' attention. [1] In software architecture, these attributed are known as "architectural characteristic" or non-functional requirements.

  4. Identification key - Wikipedia

    en.wikipedia.org/wiki/Identification_key

    In biology, an identification key, taxonomic key, or frequently just key, is a printed or computer-aided device that aids in the identification of biological organisms. Historically, the most common type of identification key is the dichotomous key , a type of single-access key which offers a fixed sequence of identification steps, each with ...

  5. Eight dimensions of quality - Wikipedia

    en.wikipedia.org/wiki/Eight_dimensions_of_quality

    Features: features are additional characteristics that enhance the appeal of the product or service to the user. Reliability: a key element for users who need the product to work without fail for an adequate length of time. Conformance: is the product made exactly as the designer intended. Durability: a measure of the length of a product’s life.

  6. Service (economics) - Wikipedia

    en.wikipedia.org/wiki/Service_(economics)

    A restaurant waiter is an example of a service-related occupation. A service is an act or use for which a consumer, company, or government is willing to pay. [1] Examples include work done by barbers, doctors, lawyers, mechanics, banks, insurance companies, and so on.

  7. Primary key - Wikipedia

    en.wikipedia.org/wiki/Primary_key

    In the relational model of databases, a primary key is a designated attribute that can reliably identify and distinguish between each individual record in a table.The database creator can choose an existing unique attribute or combination of attributes from the table (a natural key) to act as its primary key, or create a new attribute containing a unique ID that exists solely for this purpose ...

  8. Usability - Wikipedia

    en.wikipedia.org/wiki/Usability

    Four key characteristics are considered when establishing a benchmark: time to do the core task, time to fix errors, time to learn applications, and the functionality of the system. Once there is a benchmark, other designs can be compared to it to determine the usability of the system.

  9. Single-access key - Wikipedia

    en.wikipedia.org/wiki/Single-access_key

    In phylogenetics, a single-access key (also called dichotomous key, sequential key, analytical key, [1] or pathway key) is an identification key where the sequence and structure of identification steps is fixed by the author of the key. At each point in the decision process, multiple alternatives are offered, each leading to a result or a ...