CHAPTER 6  Structured Types in General - The Array Type in Particular  Simple types (ordinal and real types) are unstructured types. The other  types in Pascal are  structured types  and pointer types. As structured  statements are compositions of other statements, structured types are  compositions of other types. It is the type( s) of the  components  and - most  importantly  - the  structuring  method  that  characterize  a  structured type.  Figure 6.a  Type Taxonomy of Structured Data Types  55  Structured Data Types  An,y 0':;'::  /  \  R~'U  T~"  File Data Types  Set Data Types 