Tuesday, April 13, 2021

7.4 TR 4 and 7.3 TR10 announced

ibm i technology refreshes announced 7.4 tr4 and 7.3 tr10

Today IBM has announced the latest Technology Refreshes for the current IBM i releases, 7.3 TR10 and 7.4 TR4. While the PTFs for some of these will be available on Friday (April 16, 2021) most of them will not be released as a PTF until May 14.

What's in these TRs?

For 7.4 TR4 only: Blocked insert is extended to include tables containing generated columns.

Wednesday, April 7, 2021

Displaying foreign key constraints using SQL

foreign key information using sql

I was asked:

What about referenced tables when you specify a foreign key when creating a table? I can check this when I run DSPFD, it is in Parent File Description but I still can't find an SQL to elaborate all tables in our Application.

I have to admit this one took me some time to find the information I need to provide the example in this post.

A foreign key is one of the many constraints that can be used with Db2 for i tables and DDS files. Doing a quick search of the IBM KnowledgeCenter I found the following:

  • SYSCST:  Every constraint, can be considered the "header" file for constraints
  • SYSCSTCOL:  Columns upon which the constraints have been defined
  • SYSCSTDEP:  Tables upon which the constrains have been defined
  • SYSKEYCST:  Every unique, primary, and foreign key that has been defined
  • SYSREFCST:  Foreign keys that have been defined

Sunday, April 4, 2021

Special religious day for IT

In the western Christian calendar today is doubly special. It is Easter day, and it is Saint Isidore of Seville saint's day.

St Isidore of Seville is special to the Information Technology community as in 1997 he was made patron saint of all things related to computers and IT by Pope John Paul II. You can learn more about Isidore here.

Happy St Isidore of Seville day, and let's hope for a little divine intervention so all of our IT projects in the next year complete successfully, on time, and on budget.

Friday, April 2, 2021

IBM KnowledgeCenter replaced

Yesterday afternoon I found that IBM had replaced their documentation website, IBM KnowledgeCenter, with a new one, IBM Documentation.

While the home pages of the KnowledgeCenter for the various releases of IBM i redirect to the equivalent page in the new IBM Documentation, the subpages do not. This means that the links to KnowledgeCenter pages at the bottom of the posts in this blog will not redirect to their equivalent in the new site.

What am I going to do? The links in the menu on the right of all pages now link to the new site. If you find a link in this blog that does not link to the Documentation site you can use the links on the right, and then search the Documentation site for the relevant information.

The links to the Documentation pages for each release are:

 

Addendum – April 5, 2021

Barbara Morris, lead developer for the RPG compilers in the Toronto labs, posted a comment in this post:

I tried clicking on the link for %LIST at the end of this article https://www.rpgpgm.com/2020/11/new-rpg-features-for-arrays.html and it correctly redirected. So maybe the redirects were not all in place yet at the time you tried them, Simon.

I have clicked on an assortment of links in this blog too and it would appear that the old URLs do redirect to the new URLs. This makes me a very happy man.

Thank you IBM for putting the redirections in place.

Thursday, April 1, 2021

Next CTXiUG meeting

The next meeting for the Central Texas IBM i User Group, CTXiUG, will be on Tuesday April 13 at 6:30 CT.

CTXiUG is fortunate to have Ramaj Kasamsetty presenting: Consume REST APIs from IBM i.

The presentation is online and is free. Everyone is welcome. All you have to do is to sign up, which you can do here. Space is limited so sign up while there are still places available.

More information about the meeting can be found on the CTXiUG's website: ctxiug.blogspot.com