Planguage - Requirements Engineering and Management for Software Development Projects - page 248

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Term Explanation

Function Target A specified function requirement. We need to plan delivery of the function

under the specified conditions

Fuzzy A specification which is known to be somewhat unclear, potentially

incorrect or incomplete

G
Gap For a scalar attribute gap is a range from an impact estimate or a

specification benchmark to a specification target

Gist A parameter used to state the essence, or main point, of a specification

Goal A primary numeric target level of performance

I
Icon In Planguage an icon is a symbol that is keyed (keyed icon) or drawn

(drawn icon) that represents a concept

If A logical operator used in qualifiers to explicitly specify conditions

Impact The estimated or actual numeric effect on a requirement attribute under

given conditions

Impacts A parameter that is used to identify the set of attributes that are considered

likely to be impacted by a given attribute

Includes Expresses the concept of inclusion of a set of components within larger set

of components

Issue Any subject of concern that needs to be noted for analysis and resolution

L
Level A defined numeric position on a scale of measure

Limit A numerical level at a border, that is, at an edge of a scalar range

M
Master Definition

The primary and authoritative source of information about the meaning of
a specification or a specification element

Metric Any kind of numerically expressed system attribute

Mission A mission specifies who we are (or what we do) in relation to the rest of the

world

O
Objective A synonym of performance requirement

Or A logical operator used in qualifiers or other appropriate specifications

Or Better An expression used within a scalar specification to explicitly emphasize

that the specified level has a range of acceptable values rather than
being just a fixed single value

Or Worse An expression used within a scalar specification to explicitly emphasize

that the specified level has a range of acceptable values rather than
being just a fixed single value

Owner A person or group responsible for an object and for authorizing any change

to it

P
Parameter A Planguage defined term. Parameters are always written with at least a

leading capital letter to signal the existence of a formal definition

Past A parameter used to specify historical reference, a benchmark.

Percentage
Uncertainty

It is calculated from the scale uncertainty baseline and target data

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