N

named pipe
An interprocess communication (IPC) mechanism that Microsoft SQL Server™ and Open Data Services use to provide communication between clients and servers. Named pipes permit access to shared network resources.
namespace (XML)
See XML namespace.
node
The basic unit of the XML Document Object Model. There are twelve types of nodes in the XML Document Object Model.
noise word
Keywords that a valid database search would likely not need, such as articles, pronouns, prepositions, and a few simple verb forms.
nonclustered index
An index in which the logical order of the index does not match the physical, stored order of the rows on disk. A nonclustered index uses the order of the index key values and has a pointer to the storage location of the data.
normalizing
To process of minimizing the duplication of information in a relational database through effective table design.
n-tier application
An application that divides its processing into logical layers. In a Windows DNA application, these layers are the user-services tier, the business-services tier, and the data-services tier. For more information, see N-Tier Development Model.
n-tier architecture
See Microsoft Windows Distributed interNet Applications Architecture.
NTLM Security
See Windows NT Challenge/Response.
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