Updating variables in xquery
Updating variables in xquery - Sex Chat
In this paper, we first consider the data modeling guidelines using XML, including database design principles, and then we provide query and data modification guidelines for optimizing the performance of applications.The XML data type provides data modeling capabilities for semi-structured and unstructured data within an enterprise.
Introduction Data Modeling with the XML Data Type Bulk Loading XML Data Indexing XML Data Query and Data Modification Conclusion Enterprise applications are increasingly using XML for modeling semi-structured and unstructured data.Microsoft SQL Server 2005 provides extensive support for XML data processing to help develop such applications.XML data can be stored natively in an XML data type column, which can be typed according to a collection of XML schemas or left untyped.Fine-grained data manipulation is supported using XQuery, an emerging W3C recommendation currently in Last Call, and an XML data modification language.The XML column can be indexed to improve query performance.Enterprise applications are increasingly using XML for modeling semi-structured and unstructured data and will benefit from the XML support in SQL Server 2005.
This paper provides suggestions for optimizing the storage, queries, and data modification of applications that use the XML data type. For a discussion of best practices for XML data modeling and usage, see the related white paper, XML Best Practices for Microsoft SQL Server 2005, on the Microsoft Developer Network (MSDN).
For information about optimizations for XML view technology using mapping, see Optimizing SQLXML Performance in the MSDN Library.
Shankar Pal, Babu Krishnaswamy, Vasili Zolotov, and Leo Giakoumakis Microsoft Corporation December 2005 Applies to: Microsoft SQL Server 2005 XML Data Type Summary: This paper explores several ideas to improve the query and data modification performance of the XML data type in Microsoft SQL Server 2005.
To get the most value from this paper, you need to be familiar with the XML features in SQL Server 2005.
For background material, see XML Support in Microsoft SQL Server 2005 and XML Best Practices for Microsoft SQL Server 2005 on the Microsoft Development Network (MSDN).
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