Legacy Issue Number: 19172
Source: General Electric ( Mark Linehan)
Many scale definitions in DTV include a Necessity that some time point "has <number> of <class>" some other time point. The issue here is that correct use of SBVR Structured English would employ the keyword "exactly", as in "has exactly <number> <class>". Examples of this problem occur in the glossary entries are listed below.
Also, most of these examples quote the <class>, using keyword-style quotes. But the entry for "Gregorian year of months scale" does not quote the <class>. If the documented SBVR-SE style is used, such quotes should not be used.
Gregorian year of months scale
January (and all the month definitions, except the one for February)
week of days scale
day of hours scale
day of minutes scale
day of seconds scale
hour of minutes scale
minute of seconds scale
Reported: DTV 1.0 — Mon, 30 Dec 2013 05:00 GMT
Disposition: Resolved — DTV 1.3
Replace 'time point has number of time point kind' with 'time point subdivides into time point'
The Necessities described in the issue use the verb concept ‘time point has number of time point kind’, which is defined in clause 10.4. In that usage, the <number> value plays a verb concept role, and is defined to be the cardinality of a time point sequence. The <number> is not a quantification (which would use ‘exactly’).
The RTF agrees that the verb concept ‘time point has number of time point kind’ is unusual syntax for a quantifiable relationship between time points, and that the markup of the usages is incorrect. The verb concept is really a description of the structure of a subdivision, as the existing Note for the verb concept says. This revision improves the text by replacing the strange support verb concept with a simpler one, and by correcting all the previous uses.
Updated: Tue, 12 Jul 2016 14:45 GMT
DTV13 — Missing "exactly" in scale definitions
- Key: DTV13-25
- OMG Task Force: DateTime Vocabulary (DTV) 1.3 RTF