Property talk:P6949

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announcement date
time of the first public presentation of a subject by the creator, of information by the media

Represents	announcement (Q567303)
Data type	Point in time
Domain	work (Q386724), theory (Q17737), rule (Q1151067), group of works (Q17489659), version, edition or translation (Q3331189), fictional creative work (Q15306849), concept car (Q850270), type of manufactured good (Q22811462), boat type (Q16103215), project (Q170584), organization (Q43229), transport infrastructure (Q376799), system (Q58778), event (Q1656682), brand (Q431289), product model (Q10929058), model series (Q811701), software bug (Q179550), software feature (Q4485156), proposed country (Q3591867) or part of a work (Q88392887)
Allowed values	mw.text.lua:277: invalid value (nil) at index 1 in table for 'concat'
Example	Renault EZ-Ultimo (Q56878821) → 2 October 2018 Samsung Galaxy S9 (Q50102300) → 25 February 2018 Bombardier Global 5500 (Q57078862) → 27 May 2018 Bavaria R55 (Q57078990) → 20 January 2018
Tracking: usage	Category:Pages using Wikidata property P6949 (Q106486722)
See also	inception (P571), publication date (P577), time of discovery or invention (P575), date of first performance (P1191), production date (P2754), time of earliest written record (P1249), date of official opening (P1619), date of commercialization (P5204)
Lists	Items with the most statements of this property Count of items by number of statements (chart) Items with the most statements Items with the fewest statements Count of items by number of sitelinks (chart) Items with the most sitelinks Items with the most sitelinks, but no link to one Wikipedia (sample: Welsh Wikipedia, cywiki) Items with the fewest sitelinks Most linked wikis Items with the most identifier properties Items with no other statements Most recently created items Items with novalue claims Items with unknown value claims Usage history (total) Usage history (main statement) Chart by item creation date Future dates Dates in Gregorian calendar before 1582 Dates before year 1 (Help:Dates#Years BC) Date on January 1 (Help:Dates#January 1 as date) Database reports/Constraint violations/P6949 Map Random list
Proposal discussion	Proposal discussion
Current uses	Total 8,772 Main statement 2,913 33.2% of uses Qualifier 5,805 66.2% of uses Reference 54 0.6% of uses

[create Create a translatable help page (preferably in English) for this property to be included here]

Type “work (Q386724), theory (Q17737), rule (Q1151067), group of works (Q17489659), version, edition or translation (Q3331189), fictional creative work (Q15306849), concept car (Q850270), type of manufactured good (Q22811462), boat type (Q16103215), project (Q170584), organization (Q43229), transport infrastructure (Q376799), system (Q58778), event (Q1656682), brand (Q431289), product model (Q10929058), model series (Q811701), software bug (Q179550), software feature (Q4485156), proposed country (Q3591867), part of a work (Q88392887)”: item must contain property “instance of (P31)” with classes “work (Q386724), theory (Q17737), rule (Q1151067), group of works (Q17489659), version, edition or translation (Q3331189), fictional creative work (Q15306849), concept car (Q850270), type of manufactured good (Q22811462), boat type (Q16103215), project (Q170584), organization (Q43229), transport infrastructure (Q376799), system (Q58778), event (Q1656682), brand (Q431289), product model (Q10929058), model series (Q811701), software bug (Q179550), software feature (Q4485156), proposed country (Q3591867), part of a work (Q88392887)” or their subclasses (defined using subclass of (P279)). (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P6949#Type Q386724, Q17737, Q1151067, Q17489659, Q3331189, Q15306849, Q850270, Q22811462, Q16103215, Q170584, Q43229, Q376799, Q58778, Q1656682, Q431289, Q10929058, Q811701, Q179550, Q4485156, Q3591867, Q88392887, SPARQL

Conflicts with “instance of (P31): filmography (Q1371849), Wikimedia disambiguation page (Q4167410), Wikimedia category (Q4167836), Wikimedia project page (Q14204246), Wikimedia template (Q11266439), fictional universe (Q559618)”: this property must not be used with the listed properties and values. (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P6949#Conflicts with P31, SPARQL

Qualifiers “place of publication (P291), platform (P400), distribution format (P437), sourcing circumstances (P1480), refine date (P4241), criterion used (P1013), title (P1476), language of work or name (P407), start time (P580), end time (P582), of (P642), online service (P2361), earliest date (P1319), latest date (P1326), exception to constraint (P2303), record label (P264), object named as (P1932), nature of statement (P5102), statement disputed by (P1310), statement supported by (P3680), object has role (P3831), volume (P478), URL (P2699), archive URL (P1065), archive date (P2960), published in (P1433), publisher (P123), reason for deprecated rank (P2241), reason for preferred rank (P7452), earliest end date (P8554), latest start date (P8555), applies to part (P518), announced at (P9731), location (P276), statement is subject of (P805), author (P50)”: this property should be used only with the listed qualifiers. (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P6949#allowed qualifiers, SPARQL

Range from “-3190000-00-00T00:00:00Z” to “now”: values should be in the range from “-3190000-00-00T00:00:00Z” to “now”. (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P6949#Range

Citation needed: the property must have at least one reference (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P6949#citation needed

Allowed entity types are Wikibase item (Q29934200): the property may only be used on a certain entity type (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P6949#Entity types

Scope is as main value (Q54828448), as qualifier (Q54828449): the property must be used by specified way only (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P6949#Scope, SPARQL

This property is being used by: es:Plantilla:Evento eu:Txantiloi:Lan infotaula be-tarask:Шаблён:Кампутарная гульня Please notify projects that use this property before big changes (renaming, deletion, merge with another property, etc.)

URLs?

I've put some links to press releases in URL (P2699) or archive URL (P1065) qualifiers, as in ARM Cortex-A75 (Q39052876). That seems to go with other permitted qualifiers like volume (P478). I suppose they could go as references instead (which is what I'd do for 3rd party articles about the announcement). Ghouston (talk) 09:40, 4 July 2019 (UTC)

Since there doesn't seem to be any objection, I'll add URL (P2699), archive URL (P1065) and archive date (P2960) as allowed qualifiers. Ghouston (talk) 01:44, 7 July 2019 (UTC)

Announcement by exhibiiton

One other I haven't figured out is Rockchip RK3399 (Q28057938), where a product was apparently announced by information presented at a show booth, in this case at CES 2016 (Q28149988). Since this item is an event, not a location, place of publication (P291) isn't right. I put it for now on distribution format (P437), which doesn't look good either. Ghouston (talk) 01:53, 7 July 2019 (UTC)

I found exhibition history (P608), which seems suitable. I'll add that as a qualifier too. Ghouston (talk) 02:00, 7 July 2019 (UTC)

I had a similar issue with modeling video games announced at an event ; I was suggested to go with location (P276) − see eg Q64577191#P6949. It does feel a bit weird with online events such as for Q96240948#P6949. Jean-Fred (talk) 13:08, 14 June 2020 (UTC)

@Ghouston: I think this is the qualifier you were looking for, see announced at (P9731). Regards Kirilloparma (talk) 00:08, 12 July 2021 (UTC)

That's fine, I see it was only created this month. I guess exhibition history (P608) isn't needed as a qualifier then. Ghouston (talk) 07:28, 12 July 2021 (UTC)

Announcement of part of an item

I am working on a concert and the live video album of it which share the same name and Wikipedia entry, and the concert and the recording are announced separately, so I'd like to use applies to part constraint with this property. I could create separate items for the concert and the live video album, but that requires duplicating a lot of information for a lot of concert and live video album pairs produced this way in Japan. Fridsun (talk) 03:17, 17 November 2020 (UTC)

I have noticed that "of (applies to)" can be used with this, but as claimed in that page it is preferred to use more specific constraints. In that light I think it is proper to add "applies to part" to the list of allowed constraints. Fridsun (talk) 03:26, 17 November 2020 (UTC)

@Fridsun: A Wikidata item should be about a well-defined single entity, in this case, either the concert or the album. If both are wanted, it should be two items. Ghouston (talk) 04:32, 18 November 2020 (UTC)