Help:来源/无需来源的项

维基数据是有来源数据的聚集处，这意味着很多声明应该指明数据来自哪里。

In some cases sources are not typically required. This guideline explains when it is not necessary to add a source to a statement in Wikidata.

Please note that when data about an item is disputed, then a source needs to be added regardless of whether it is included below. Furthermore, sources should not be removed from items that already have sources.

当一个值是人类的常识

必然的属性通常不需要指明来源：

1. 很多“instance of (P31) ”值
   • 在这些信息对于绝大多数阅读此数据项的人而言都显而易见的情况下
   • 例如：声明“Elvis Presley (Q303)instance of (P31)human (Q5)”不需要来源
2. occupation (P106)
   • 除非它并不知名；然而，绝大多数人正是因为他们的职业而在维基数据具足够关注度
   • 例如：声明“Elvis Presley (Q303)的occupation (P106)是singer (Q177220)”不需要来源
3. subclass of (P279)
   • 类似于instance of (P31) — 但当一个类中所有实例也是另一个类的实例时使用
   • 例如：声明“trilogy (Q149010)的subclass of (P279)是一个series of creative works (Q7725310)”不需要来源

当项目有指向外源的陈述时

在外部信息源能轻而易举地验证陈述时：

1. 规范控制属性
   • values for authority control properties do not need a source because the values are linked to and/or automatically imported from the authoritative catalog, system, or database
   • Example: a statement about Harry Potter and the Philosopher's Stone (Q43361)'s GND ID (P227) (an authority file maintained by the German National Library) or its OCLC control number (P243) does not need a source
2. Commons category (P373)
   • a statement about the item's Wikimedia Commons category (the category containing files related to the item) does not need a source
3. topic's main category (P910) 与category's main topic (P301)
   • for items that are Wikimedia category pages
   • Example: a statement that the category's main topic (P301) is Germany (Q183) for Category:Germany (Q1410828) does not need a source

Note: If a particular authority control source of information has not yet been added to Wikidata as a property, you can propose it at Wikidata:Property proposal/Authority control.

当项本身就是声明的来源时

1. a book for its author and other information on the cover
   • for information inside the book (e.g. plot details) use chapter (P792) in the source
   • Example: a statement about The Hunger Games (Q11679) having Suzanne Collins (Q228624) as the author (P50) does not then need to include The Hunger Games (Q11679) as a source
2. a movie for its actors and other information in the credits
3. a DVD or LP record for information on the cover, including the playlist
   • for information in liner notes use stated in (P248) with liner notes (Q2263757) as the source
4. coordinates for anything you can visit or easily identify on a map, including a lunar or Martian map.

参见

• Help:Sources