BS/EN 61360-6-2017 pdf download.Standard data element types with associated classification scheme for electric components Part 6: IEC Common Data Dictionary (IEC CDD) quality guidelines.
The entry should read as follows: (A] lead pencil (is a] pencil whose graphite core is fixed in a wooden casing that is removed for usage by sharpening.
The words making up the definition should be common language as specified by the reference works for English language recommended by the IEC Directives (see ISO/IEC Directives, Part 2:2016. 8.5) and should not need further explanation.
NOTE A concept or characteristic has always a definition regardless if liz designation. i.e. preferred name (see IEC 61360-1). is taken from commonly used dictionaries or other common sources,
EXAMPLE 2 The word “Computer” used In the body of a definition does not need further explanation If Its Intended meaning Is in accordance to common language as specified. ag.. in The Conc,se Oxford Dictionary (see ISOIIEC Directives, Part 2:2016. 8.2) whereas a concept or characteristic designated as “Computer” always requires a definition
If expert language is unavoidable or misunderstandings are likely the definition should be complemented by a reference to acknowledged sources such as International Standards or expert literature where further explanation can be found.
5.3 ConcIseness
Ideally, definitions shall be as simple and concise as possible. Complex definitions can contain several dependent clauses, but carefully written definitions contain only that Information which makes the concept unique. On the other hand, no information required for achieving the uniqueness of the concept or characteristic shalt be hidden. All information essential for defining the concept shall be disclosed.
EXAMPLE I The phrase and considering other conditions” in a definition states the necessity of additional information for the definition without providing this information arid, thus, violates the above requirement.
Any additional descriptive information deemed necessary should be Included in a note.
EXAMPLE 2
lead pencil
pencil whose graphite core is fixed in a wooden casing that Is removed for usage by sharpening
Note I to entry To be used for writing or making marks, a lead pencil must be sharpened at least at one end.
A definition shall describe only one concept or characteristic. It shall not include hidden definitions for any concepts used to identify qualities. Any quality that requires an explanation shall be defined separately as a concept or given in a note.
EXAMPLE 3
lead pencil
pencil whose wooden casing Is fixed around graphite. a soft, black form of carbon
The use of an element of the designation, other than the head word, as a characteristic in the definition should be avoided as much as possible (see EXAMPLE 2). However, cases exist where the name of the superordinate concept Is part of the designation of the term. This part of the designation may be reused in the definition of the term.
EXAMPLE 2
evergreen tree;
cu-c u/ar defrnEtion tree with evergreen foliage
corrected definition: tree that retains its foliage throughout Its lifetime
Note, that In this example “tree” a the superordinate concept for “evergreen tree” and thus is reused in the definition of “evergreen tree”.
In cases when the designation of the concept is very close to the name of the superordinate concept effort should be Invested In finding another name for the concept to avoid misunderstandings. Even though formally correct, the definition below may easily create misunderstandings (EXAMPLE 3).
EXAMPLE 3
International Standard
international standard published by IEC, ISO. ISO1IEC, or by ITU
Note, that “Internahonal Standard” and “international standard” are very close and can easily be confused.
A definition is circular within a system of definitions when two or more concepts are defined by means of each other.
5.5.3 Incomplete definitions
A definition shall describe the content of the concept precisely. It shall be neither too narrow nor too broad.
Otherwise, the definition is considered incomplete. Non-essential or irrelevant characteristics In the definition can unintentionally include or exclude objects from the extension of the concept.
A definition is considered too broad if the characteristics selected to describe the concept do not allow for objects that are Implied by the definition, as part of Its extension. A definition is considered too narrow if the characteristics (selected to describe the concept) allow for objects that are not implied by the definition, as part of its extension.BS/EN 61360-6-2017 pdf download.

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