N

Namespace

An abstract container providing context for the items it holds through unique names.

Nonclustered index

A SQL Server index that is separate from the table.

Normalization

A formal process of removing redundancy from a database design by separating it into children tables from the parent table.

Notification

A personalized, timely message sent in a SQL Server Notification Services solution to a subscriber.

N-tier architecture

A client/server architecture with a number of different software layers that are responsible for a particular function in a software solution.