There are four main categories of Attributes:
All Attributes are qualified by Conditions, which describe the time, place and events under which the Attributes exist.
Attribute: “A characteristic of an Item; for example, the item’s color, size, or Type.”
Source: Dictionary of Computing Terms, IEEE 630-90, 1990.
inherent property or characteristic of an Entity that can be distinguished quantitatively or qualitatively by human or automated Means
[based on ISO/IEC 15939:2002]
Note: ISO 9000 makes the distinction between: inherent Means existing in something, especially as a permanent characteristic, and a characteristic assigned to a Product, Process or System (e.g. the price of a Product, the owner of a Product) is not a Quality characteristic of that Product, Process or System.
Reliability: “The Attribute tag name.”
Ambition: High duration of operation. “Summary of the target.”
Scale: Hours of <uninterrupted service>. “Defining the Measure.”
Goal [Next Release]: 6,000 hours. “The required target Level for the Attribute.”
The tag (Reliability) and the parameters (Ambition, Scale and Goal) provide a systematic framework for defining and referring to a Scalar attribute’s components.
There is no specific icon for ‘attribute.’ The icons for the main categories of Attribute are used instead, as follows:
For a Function Attribute: O “The drawn icon is an oval.”
For a Product-Value Attribute: O-> “An outward pointing arrow from a Function.”
For a resource Attribute: ->O “An inwards pointing arrow to a Function.”
(The Past, Record, Trend, Fail, Goal, Stretch and Wish Scalar values are various points along these arrows and each
have their own icon, see the relevant Glossary entries.)
For a design Attribute: [<design name>] “The tag name of the design, underlined and enclosed in square brackets.”
History of Concept