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Ihre Experten für XML, XQuery und XML-Datenbanken
151 results:
111. XQuery | Data model | Atomic values  
Atomic values Atomic values are instances of a simple type according to XML Schema which means, for example, character strings as "Emma Miller" or numbers as, for…  
112. XQuery | Data model | Type conversion  
Type conversion Apart from the constructor for each type, there is a cast as operator which fulfils the same function, namely to generate a value of a certain type from an output…  
113. XQuery | Data model | Functions on sequence items  
Operations and functions on sequences of atomic values A sequence of values of xs:integer type can be generated with the to operator. So, the expression 3 to 7 results in the…  
114. XQuery | Data model | Atomisation  
Atomisation Atomic values actually do not appear in XML documents. Rather, XML documents are presented in the XQuery data model as a tree of nodes. However, for calculating and for many…  
115. XQuery | Data model | Special types  
Special types in XQuery As already mentioned, information from XML Schema or the DTD are used in order to assign atomic values which appear in a XML document to the correct type. But what…  
116. XQuery | Data model | Nodes  
Nodes In the previous sections we have learned how XQuery integrates the simple data types of XML Schema and on the one hand limits them in the use (because list and union types are…  
117. XQuery | Data model | Element nodes  
Element nodes An element node represents an element from XML 1.0. The textual value of an element node results from the concatenation of all text nodes which are descendants of this…  
118. XQuery | Data model | Whitespace in element constructors  
Whitespace in element constructors The treatment of whitespace in element constructors is controlled by the value of xmlspace from the XQuery prologue. In case it is not explicitly…  
119. XQuery | Data model | Computed element constructor  
The computed element constructor When using the direct element constructor, element content and attribute values can be computed by expressions; however, the element…  
120. XQuery | Data model | Document nodes  
Document nodes A document node represents a XML document. XQuery has a wider definition of a XML document than the XML specification. Therefore, it is not required that there is exactly…  
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