The following slides explain Oracle object-relational SQL.

Slide 12.1: Oracle object-relational SQL
Slide 12.2: Creating object types: syntax
Slide 12.3: Creating object types
Slide 12.4: Creating cyclic object types
Slide 12.5: A relational table with object types
Slide 12.6: A relational table with object types (cont.)
Slide 12.7: An object table
Slide 12.8: Object tables vs relational tables with objects
Slide 12.9: Object-relational examples
Slide 12.10: Object references
Slide 12.11: Object references (cont.)
Slide 12.12: Object references (cont.)
Slide 12.13: Constructor methods
Slide 12.14: Constructor methods (cont.)
Slide 12.15: Object type dependencies
Slide 12.16: Data dictionary and objects
Slide 12.17: Data dictionary and objects (cont.)

  ☂ References

Slide 12.a: Object-relational features of Oracle







      “There are three things all wise men fear:    
      the sea in storm, a night with no moon,    
      and the anger of a gentle man.”    
      ― Patrick Rothfuss, The Wise Man’s Fear