Chapter 8. Working with XML
Introduction
ADO.NET and XML classes are tightly integrated in the .NET Framework.
The DataSet
can be filled with data or a schema
from an XML stream or document. The DataSet
can
persist or serialize its data or schema to an XML stream or document.
ADO synchronizes the DataSet
with an
XmlDataDocument
. Data can be modified
simultaneously using either class as needed; all changes made in one
class are immediately reflected in the other class. This chapter
focuses on XML support in ADO.NET and in SQL Server 2000.
The XML support in .NET is provided by integrated classes in five namespaces:
System.Xml
Contains classes that provide standards-based support for processing XML
System.Xml.Schema
Contains classes that provide standards-based support for XML Schema Definition (XSD) language schemas
System.Xml.Serialization
Contains classes that serialize objects into XML documents or streams
System.Xml.XPath
Contains classes that parse and evaluate XPath
System.Xml.Xsl
Contains classes that support Extensible Stylesheet Language (XSL) transformations
The DiffGram
is an XML format that identifies
current and original versions of data allowing the contents of a
DataSet
to be recreated accurately. The
DiffGram
allows you to identify the changes made
to a DataSet
since it was filled. The
DataSet
uses the DiffGram
format to persist and to serialize its contents for transport across
a network. Recipe 8.8 shows how to create a
DiffGram
of changes made to a
DataSet
.
SQL Server 2000 introduced ...
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