Skip to main content

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.

Labels:

Comments

  1. rwienerOctober 24, 2019 at 5:35 AM

    Great serie :-)

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

    Very thanks

    ReplyDelete
  2. StevenFeuersteinOctober 24, 2019 at 5:38 AM

    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?

    ReplyDelete
    Replies
    1. Richard SmithOctober 24, 2019 at 5:51 AM

      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: https://stevenfeuersteinonplsql.blogspot.com/2019/09/object-type-methods-part-3.html

      Delete
    2. StevenFeuersteinOctober 24, 2019 at 5:59 AM

      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.

      Delete

Post a Comment

Popular posts from this blog

Three tips for getting started right with Oracle Database development

By "Oracle Database development", I mean, more or less, writing SQL and PL/SQL. I assume in this post that you have access to Oracle Database (which you can get via Cloud services, Docker , GitHub and OTN ). A. Use a powerful IDE, designed with database programming in mind. There are lots of editors out there, and many IDEs that work with Oracle Database. Sure, you could use Notepad, but OMG the productivity loss. You could also use a popular editor like Sublime, and then it get it working with Oracle. I suggest, however, that you  download  and install Oracle's own own, free, powerful IDE: SQL Developer . If you like to complement your graphical IDE with a command line tool (or OMG if you actually prefer  a command line tool to a graphical interface), you should also check out the relatively new and generating-lots-of-excitement SQLcl . B. Enable compile-time warnings and PL/Scope. The database has tons of useful functionality burned right into it, ready for...
8 comments
Read more

Why DBMS_OUTPUT.PUT_LINE should not be in your application code

A database developer recently came across my  Bulletproof PL/SQL  presentation, which includes this slide. That first item in the list caught his attention: Never put calls to DBMS_OUTPUT.PUT_LINE in your application code. So he sent me an email asking why I would say that. Well, I suppose that is the problem with publishing slide decks. All the explanatory verbiage is missing. I suppose maybe I should do a video. :-) But in the meantime, allow me to explain. First, what does DBMS_OUTPUT.PUT_LINE do? It writes text out to a buffer, and when your current PL/SQL block terminates, the buffer is displayed on your screen. [Note: there can be more to it than that. For example, you could in your own code call DBMS_OUTPUT.GET_LINE(S) to get the contents of the buffer and do something with it, but I will keep things simple right now.] Second, if I am telling you not to use this built-in, how could text from your program be displayed on your screen? Not without a lot o...
4 comments
Read more

The future of Oracle PL/SQL: some thoughts on Sten Vesterli's thoughts

Sten Vesterli published a very thought-provoking post on his blog: Please stop reading this post, and read that one. When you are done, come on back here for my thoughts on Sten's thoughts. OK. You read it. Here we go. First, thanks, Sten, for being such an interesting, wise, sometimes provocative voice in our community. Next, Sten writes: Now, on the one hand, I certainly agree that the vast majority of young developers are currently caught up in the modern version of a Gold Rush, which is: "Build an app using JavaScript, pay no attention to that database behind the curtain." But I can assure you that I still do meet young PL/SQL programmers, regularly, when I am at conferences and doing onsite presentations at companies. So, young person who writes PL/SQL: do not be afraid! You are not alone! And you are super-smart to have made the choice you did. :-) Next, Sten offers this advice to managers: I agree that PL/SQL is a "spec...
46 comments
Read more