Index N

[SYMBOL] [A] [B] [C] [D] [E] [F] [G] [H] [I] [J] [K] [L] [M] [N] [O] [P] [Q] [R] [S] [T] [U] [V] [W]

nested- loops joins   2nd  
       in DB2 execution plan  
       forcing use of   2nd   3rd  
       in Oracle execution plan  
       in SQL Server execution plan  
       when to use   2nd  
nodes
       cloud of  
       in query diagrams  
       unnecessary, in queries with views  
nonunderlined numbers in query diagrams  
nonunique indexes, performance effects of  
normal form, query diagrams matching  
normalized data   2nd   [See also denormalized data]3rd  
NOT EXISTS-type subquery   2nd   3rd  
null values
       database interpretation of  
       in indexes   2nd   3rd  
numbers in query diagrams   2nd   3rd   [See also filter ratio; join ratio]
NVL() function