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Object Types and Object-Oriented Development with PL/SQL: the Series

Find below the list of my blog posts in a series on working with object types (a.k.a, classes) in Oracle Database and, specifically, PL/SQL.

This series is not intended to offer an in-depth training on object-oriented development; instead, it introduces basic O-O concepts and shows how they are implemented in Oracle Database with PL/SQL.

Introduction to Object Types, Part 1
Object Types and Inheritance, Part 2
Object Types Methods, Part 3
Using Object Types in Relational Tables, Part 4
Comparison Methods for Object Types, Part 5
Dynamic Polymorphism - Why, What, How, Part 6

Each post also contains a link to a LiveSQL script, so you can try out all the code yourself.


  1. Great serie :-)

    But I am not able to see part 3 Object type methods - error "Invalid securityToken. Error 403"

    Very thanks

  2. Hmmm. Sorry to hear this. I just tried the link on three different browsers and did not have any trouble. Did you try a different browser? Clear your cookies?

    1. The above link to Part 3 contains "/b/post-preview?token=" which returns the "Invalid security Token" error, but a blog search for the article title brings up the actual post successfully:

    2. Oy, I am such a goof! Thanks, Richard, yes, the URL I had pasted in there was my preview link. I have now fixed this to use the correct URL.


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