April 2011
Beginner to intermediate
443 pages
11h
English
book
Foundations of SQL Server 2008 R2 Business Intelligence, Second Edition
by Lynn Langit, Guy Fouché
Content preview from Foundations of SQL Server 2008 R2 Business Intelligence, Second Edition
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A P P E N D I X
The HIERARCHYID Datatype
Microsoft introduced the HIERARCHYID datatype as part of SQL Server 2008. A HIERARCHYID instance represents a hierarchy tree structure. Each node of a hierarchy tree can be manipulated and retrieved from the HIERARCHYID instance. When using HIERARCHYID, access is provided via a managed set of Common Language Runtime (CLR) data type methods that support creating, reading, updating, and deleting (CRUD) nodes in a hierarchy. An employee dimension, usually modeled as a self-referencing parent-child dimension, is a good candidate for HIERARCHYID.
In the following sections, you will create an employee table, ...
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