| Example 1 |
rdf:Description is a container for informations about a resource identified by the about attribute. In this case each resource
is a book, its identification (URI) is its name. Each book has an author and the specified number of pages.
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| Example 2 |
The same information as in
example 1 could be given in this way, if default namespace syntax is used for RDF element.
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| Example 3 |
In RDF elements inside Description element and attributes of Description element with the same name as these elements are
equivalent. This example is therefore equivalent in RDF terms with
example 1 and
example 2.
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| Example 4 |
This example shows a permited combination according to
example 1 and
example 3. It still express the same information as the previous examples.
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| Example 5 |
Atribute rdf:resource can be used to insert informations about a resource defined by other rdf:Description element.
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| Example 6 |
You can use rdf:Description directly in other rdf:Description elements. This example is equivalent with
example 5
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| Example 7 |
This example rewrites
example 6 using abbreviated syntax.
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| Example 8 |
The element rdf:type specifies that given rdf:Description element conforms to some specified definition.
In our case there are definitions of the element Author, with two children,
firstName and surname and of the element Book.
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| Example 9 |
The rdf:type in
example 8 can be abbreviated
in the following way: the rdf:Description tag is substituted by the element
with the same name as the one in the equivalent rdf:type attribute.
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| Example 10 |
In this example the syntaxes of
example 8 and
example 9 are combined.
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| Example 11 |
RDF defines several container elements.
The rdf:Bag element groups together relevant resources.
The order of resources is not important and it can contain duplicate
resources. The individual resources are either individually numbered with rdf:_1, rdf:_2, rdf:_3 ... , or generalized form
rdf:li can be used.
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| Example 12 |
RDF defines several container elements. The rdf:Alt element groups together resources which can be arbitrary substituted
one for another. The order of resources is not important and it can contain duplicate resources. The individual resources
are either individually numbered with rdf:_1, rdf:_2, rdf:_3 ... , or generalized form rdf:li can be used. In our case the
library have several copies of the book Matilda. If a user wants to borrow the book, he just wants one of these copies, it
does not matter which one.
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| Example 13 |
RDF defines several container elements. The rdf:Seq element groups together resources order of which is significant. The
individual resources are either individually numbered with rdf:_1, rdf:_2, rdf:_3 ... , or generalized form rdf:li can be
used. In our case the library have several copies of the book Matilda. For some reason, e.g. to keep one of the copies(M126)
in the best possible state, it preffers to lend the first specified book (M124) as often as possible. Compare with
example 12 in which the order was insignificant ant rdf:Alt was used
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| Example 14 |
Container elements rdf:Bag, rdf:Alt and rdf:Seq can have optional ID attribute. With its help whole container can be identified.
This example uses this attribute in rdf:Bag element. Notice # in the about attribute as this is a reference to an element
with ID attribute.
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| Example 15 |
In the previous
example 14 we said that the author wrote a collection of given books. We did not speak about individual books only about the collection.
In this example we want to say who is the author of each book. We will use aboutEach instead of about attribute.
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| Example 16 |
The attribute aboutEachPrefix used in rdf:Description element creates a bag of all resources URI of which starts with given
string.
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