COMPLEX OBJECTS

• COMPLEX OBJECTS ARE BUILT BY APPLYING CONSTRUCTORS TO SIMPLER OBJECTS;

  • SIMPLER OBJECTS (BASE CLASSES): INTEGERS, CHARACTERS, STRINGS, BOOLEANS, FLOATING NUMBERS
  • MINIMAL SET OF CONSTRUCTORS: BAGS, SETS, LISTS, TUPLES, ARRAYS
  • OBJECT CONSTRUCTORS MUST BE APPLICABLE TO ANY OBJECT
    
    
    • ORTHOGONAL CONSTRUCTORS
    
    
  • RELATIONAL MODEL CONSTRUCTORS ARE NOT ORTHOGONAL:
    
    
    • SET CONSTRUCTOR ONLY FOR TUPLES
    • TUPLE CONSTRUCTOR ONLY FOR ATOMIC VALUES
    
    
  
  

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Ugo O. Gagliardi
GSD-6306 Spring 2003-2004