• Eradani Bridges The Gap Between Legacy And Open Source

  July 8, 2019 Timothy Prickett Morgan

  In this publication, legacy is not a dirty word or even remotely pejorative. Rather, “legacy” is just a shorthand way of delineating between applications that encapsulate decades of the evolution of a business and the transactions it processes, and all of the other new stuff that this business is also doing and perhaps coding with newer tools and programming languages.

  A new company, called Eradani, has been founded by some experts in both the IBM i world and the open source world with the express purpose of building a technical bridge so these two different cultures can see a …

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• Guru: One Way To Deal With Two Null Formats

  July 8, 2019 Ted Holt

  Hey, Ted:

  We are building a new system and want to use modern programming and database techniques. I have had quite a time trying to get nulls to act right. It gets confusing fast because RPG handles them differently than the way embedded SQL does. When using SQL for I/O, how do we handle the two null formats?

  — Brian

  There are several ways to go about the “problem” of nulls. Let me give you one simple method, but keep in mind that it’s not the only way.

  First, let’s create a table and put some data into it.

  create 

  …

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• Guru: When %SCAN Isn’t Sufficient

  June 24, 2019 Ted Holt

  The RPG %SCAN built-in function is wonderful! I can still remember having to look for a string within a string using RPG II on System/36. What an ordeal that was! Yet in some situations %SCAN can’t do all I need it to do. In those cases, I rely on the power of SQL.

  One case where SQL comes in handy is when I need a case-insensitive scan. Instead of RPG’s %SCAN function, I use SQL’s LOCATE and UPPER functions, like this:

  dcl-s  Description  char(48);
  dcl-s  pos          int (10);
  
  exec sql
     set :pos = locate ('HAMMER', upper(:Description));
  

  If Description has the …

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• Guru: Use SQL to Generate Random Data

  June 17, 2019 Ted Holt

  Suppose I needed to generate a large database table with random data in order to adequately test the performance of an SQL query. Suppose that, for security reasons, I was not allowed to copy the production version of the table. Suppose that I needed a way to generate a lot — and I do mean a lot! — of random data. Suppose this scenario is not mere supposition.

  Before an SQL query goes into production, it should be tested against a production-like dataset. Running a query against a test dataset of 25 rows (records) can produce unpleasant surprises when it’s …

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• IBM i Gets a New Crop of ‘Fresh Faces’

  June 12, 2019 Alex Woodie

  The IBM i platform isn’t getting any younger, and neither are the thousands of individuals who work on it. But that doesn’t mean that platform as a whole should be marked by gray. To celebrate the viability of the platform’s ability to attract young people, IBM System Magazine just introduced its newest crop of “Fresh Faces.”

  IBM System Magazine has been calling attention to the IBM i youth movement since 2016, when it debuted its original crop of Fresh Faces. Liam Allan was a member of that group as a teenager, and he has since gone on to build himself …

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• Speaking The SQL Lingua Franca On IBM i

  June 3, 2019 Timothy Prickett Morgan

  No matter what the job is, we all start out somewhere that is pretty far from being an expert and we depend on our elders and mentors to help us learn all the tricks and get good at the work.

  So it is with the nearly ubiquitous database query language, Structured Query Language, or SQL for short. It started out in the head of IBMer Ted Codd back in 1969, which was coincidentally when the System/3 minicomputer launched and its successor many generations later, the System/38 in 1978, was the first IBM system and the first system in the world …

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• IBM Bolsters ACS with Database and Administrative Goodies

  May 15, 2019 Alex Woodie

  Amid the many enhancements that IBM has delivered with IBM i 7.4 and IBM i 7.3 TR6 is a new release of Access Client Solutions (ACS), which has become the go-to client interface that many IBM i professionals use to access the system for a variety of tasks. Database engineers and system administrators are the big winners with this release.

  There’s no denying that IBM delivered a whopper of release with IBM i 7.4 and its sidekick, IBM i 7.3 TR6. There’s been so much news – starting with the availability and security enhancements in Db2 Mirror and Authority Collection …

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• Guru: Emulate Control Break Reporting With DB2 For i SQL

  May 13, 2019 Michael Sansoterra

  When generating ad hoc user reports, it’s often the case that developers don’t have the time or luxury to write a high-level language program or to use a reporting tool such as DB2 Web Query or Crystal Reports to format the data appropriately. But when a user is given a raw dump of a SELECT statement’s result set in Excel, it can be quite ugly to wade through and format.

  The user may have to do things like add total rows or remove duplicate values, which can be quite time consuming. Thankfully, DB2 for i SQL offers a way to …

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• Drilling Down Into Db2 Mirror for IBM i

  May 6, 2019 Timothy Prickett Morgan

  We did our initial coverage of the new Db2 Mirror for the IBM i operating system’s integrated database two weeks ago, and now it is time to dig in a little deeper. Elsewhere in this week’s issue of The Four Hundred, we have gotten feedback from the suppliers of high availability clustering and disaster recovery software for the IBM i platform as to how Db2 Mirror compete with as well as complements their wares. And in this story, we will be digging a little deeper into Db2 Mirror itself.

  As we explained, Db2 Mirror creates an active-active database …

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• How IBM i 7.4 Improves Security

  May 1, 2019 Alex Woodie

  The unveiling of Db2 Mirror may have gotten the lion’s share of attention with last week’s introduction of IBM i enhancements. But IBM has also given its customer base some significant security upgrades with the new releases of IBM i, including enhancements to the Authority Collection and support for the latest over-the-wire encryption protocol.

  “Our big things are around those two main themes – availability as well as security,” says Alison Butterill, IBM i product offering manager at IBM. “Those are the two main themes. But we have lots of things across the board.”

  IBM gave customers significant new user-focused …

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