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26 1 Hierarchies and Relationships Striping was first introduced in the Resource Description Framework (RDF) (Lassila and Swick ...

1.6 Relationships 27 Figure 1.15 The use of references to specify a bond between two atoms in a molecule. The arrows show the at ...

28 1 Hierarchies and Relationships RDF and languages based on it allow one to use either striping or refer- ences interchangeab ...

1.7 Namespaces 29 These declarations are attributes that can be added to any element, but they are most commonly added to the ro ...

30 1 Hierarchies and Relationships space URI. When an element name or attribute has a namespace prefix, it is said to bequalifie ...

1.7 Namespaces 31 bioml: Biopolymer Markup Language http://xml.coverpages.org/bioMLDTD-19990324.txt cellml: Cell Markup Language ...

32 1 Hierarchies and Relationships Summary Namespaces organize multiple vocabularies so that they may be used at the same time. ...

1.8 Exercises 33 name prefix unit exponent millisecond milli second 1 per_millisecond milli second -1 millivolt milli volt 1 mic ...

34 1 Hierarchies and Relationships once again, multiple concepts have been encoded in a single relational database table. This e ...

2 XML Semantics 2.1 The Meaning of Meaning Semantics is a surprisingly simple notion. It is concerned with when two terms or sta ...

36 2 XML Semantics Medical Language System (UMLS). In the UMLS, “spinal tap” has concept identifier C0553794. All terms with thi ...

2.1 The Meaning of Meaning 37 for nitrous oxide using CML. The document-type definitions were highly simplified in both cases. T ...

38 2 XML Semantics <molecule id="m1" title="nitrous oxide"> <atomArray> <atom id="n1" elementType="N"/> <at ...

2.2 Infosets 39 Figure 2.4 XML data model for a typical Medline citation. Element nodes are shown using rectangles, text nodes a ...

40 2 XML Semantics The corresponding infoset is shown in figure 2.5 and differs from that in figure 2.4 in only one way: the Med ...

2.2 Infosets 41 Figure 2.6 XML data model for a Medline citation in which the status and owner attributes are in the opposite or ...

42 2 XML Semantics Figure 2.7 XML data model for a molecule represented using CML. 2.3 XML Schema As XML began to be used for ap ...

2.3 XML Schema 43 Figure 2.8 XML data model for the same molecule as in figure 2.7 except that the two atoms have been reversed. ...

44 2 XML Semantics <complexType> <sequence> <element ref=’t:MedlineID’/> <element ref=’t:PMID’/> <ele ...

2.3 XML Schema 45 </element> <element name=’Year’> <complexType mixed=’true’> </complexType> </elemen ...