What does XDR mean?

What does XDR mean?

and data alignment, and can exchange data on heterogeneous hardware systems.

XDR Data Type

##Boolean

Characters

Short

Integer

Long integer

Floating point

Double precision floating point

Enumeration

Structure

String

Fixed Length array

Variable length array

Union

opaque data

XDR using

XDR (XML-Data Simplified) schema can be used to create XML views of relational data. These views can then be queried using XPath queries. This is similar to using the CREATE VIEW statement to create a view and specify a SQL query against the view.

XML schema describes the structure of an XML document and the different constraints on the data in the document. When you specify an XPath query against a schema, the structure of the returned XML document is determined by the schema against which the XPath query was performed.

In Microsoft® SQL Server™ 2000, use the simplified XML-Data (XDR) language to create the schema. XDR is a flexible language that overcomes some of the limitations of document type definitions (DTDs) used to describe the structure of documents. Unlike DTDs, XDR schemas describe document structure using the same syntax as XML documents. Additionally, in a DTD, all data content is character data. The XDR language schema enables you to specify the data type of an element or attribute.

In XDR schema, the element contains the entire schema. As attributes of the element, you can describe the attributes that define the name of the schema and the namespace in which the schema resides. In the XDR language, all element declarations must be contained within an element.

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