By Bob Beauchemin
Few applied sciences were as eagerly expected as Microsoft SQL Server 2005 ("Yukon"). Now, 3 SQL Server insiders bring the definitive hands-on preview - actual, entire, and filled with examples. a primary examine SQL Server 2005 for builders starts off the place Microsoft's white papers and net articles depart off, displaying operating builders easy methods to take complete benefit of Yukon's key strategies. It attracts on unheard of cooperation from Microsoft's Yukon builders and the authors' hands-on entry to Yukon due to the fact its earliest alpha releases. you can find useful reasons of Yukon's new facts version, integrated .NET website hosting, better programmability, SQL-99 compliance, and masses extra. almost each key suggestion is illuminated through pattern code confirmed with Microsoft's public beta. Key insurance includes:* Yukon as .NET runtime host: improving safety, reliability, and function* Writing systems, services, and triggers in .NET languages* Leveraging robust new improvements to T-SQL* The XML facts style and XML question languages* SQL Server 2005 as an online companies platform* Client-side coding: ADO/ADO.NET improvements, SQLXML, mapping, ObjectSpaces, and extra * utilizing SQL Server 2005's integrated program server features"
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Extra resources for A First Look at Microsoft SQL Server 2005 for Developers
In addition, SQL Server 2000 extended TransactSQL to enable relational resultsets to be returned as XML. This consists of support for a FOR XML clause; three different subcategories of FOR XML are supported. The SQL Server 2000 support allowed XML document composition from relational data and XML document decomposition into multiple relational tables; this will be discussed further in Chapter 8. SQL Server 2005 extends this support by adding direct support for XQuery. The XQuery engine runs directly inside SQL Server, as opposed to 30610 01 pp.
These are (in order of importance): Recommendation, Proposed Recommendation, Candidate Recommendation, Working Draft In Last Call, Working Draft in Development, Requirements, and Note. This means that a W3C “Recommendation” is an agreed-upon standard. 13 30610 01 pp. ps 6/3/04 4:59 PM Page 14 14 INTRODUCTION relational database. Because it was originally designed as a system that could represent documents with markup as well as what is traditionally thought of as “data,” the XML type system is somewhat bifurcated into attributes and elements.
Queries in XPath reflect the hierarchical nature of XML, since nodesets are selected by using syntax similar to that used to specify files in the UNIX file system. As an example, when a typical XML document is queried using a hierarchical XPath query, the result is a nodeset containing all the nodes at that level of hierarchy. Listing 1-9 shows an example of an XPath query that, when run against the purchase order document in Listing 1-8, produces a nodeset result containing all the item elements.