[SYMBOL] [A] [B] [C] [D] [E] [F] [G] [H] [I] [J] [L] [M] [N] [O] [P] [R] [S] [T] [U] [V] [W] named notation NCHAR datatype NCLOB datatype nested collections nested tables initializing 2nd syntax for declaring nesting records NEXT function NLS (national character set) datatypes external procedures and NOCOPY option NOT INSTANTIABLE method modifier NOT NULL constraint %NOTFOUND attribute NULL statements NULLs in PL/SQL numeric datatypes numeric literals NVARCHAR2 datatype |