|
In RDF, a blank node (also called ''bnode'') is a node in an RDF graph representing a resource for which a URI or literal is not given. The resource represented by a blank node is also called an anonymous resource. According to the RDF standard a blank node can only be used as subject or object of an RDF triple. == Notation in serialization formats == Blank nodes can be denoted through blank node identifiers in the following formats, RDF/XML, Turtle, N3 and N-Triples. The following example shows how it works in RDF/XML. The blank node identifiers are only limited in scope to a serialization of a particular RDF graph, i.e. the node '_:b' in the subsequent example does not represent the same node as a node named '_:b' in any other graph. Blank nodes can also be denoted through nested elements (in RDF/XML, Turtle and N3). Here is the same triples with the above. Below there is the same example in Turtle. ex:professor ("Adam Smith" ; ex:homePage 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Blank node」の詳細全文を読む スポンサード リンク
|