Apache Airflow is the leading open-source platform to programmatically author, schedule, and monitor data pipelines and workflows using Python. Workflows are defined as code (DAGs), making them version-controlled, testable, and reusable. With a rich UI, 100+ built-in operators, dynamic task generation, and native support for cloud providers, Airflow powers ETL/ELT, ML pipelines, and batch jobs at companies like Airbnb, Netflix, and Spotify.

Airflow Application Layout

Let’s spotlight the brilliant authors and contributors of our November Article Bounty! 💙
Thank you to everyone who took part and shared their knowledge with the community.

A special shout-out goes to those who created brand-new articles and contributed their expertise — each received 5,000 points 🎉

@Zion Amsalem -- "Consuming REST-APIs for dummies (beginner-friendly)"
@Robert Cemper -- "Network Debugging for Beginners - 1"
@Irène Mykhailova -- "Connecting C# to InterSystems IRIS via ODBC"
@Vachan C Rannore -- "My experience with APIs and POS integration."
@Padmaja Konduru -- "Production Terminal Commands"

FastJsonSchema: High-Performance JSON Validation in IRIS

Validating JSON data against JSON Schema is a common requirement for modern applications. FastJsonSchema brings this capability natively to InterSystems IRIS, combining speed, simplicity, and full schema compliance.

Unlike traditional validation approaches, FastJsonSchema generates native ObjectScript code from your JSON Schemas and compiles it directly to iris object code, enabling idiomatic performance without relying on external libraries or runtimes.

Hello,

I am using Object Script with Phyton to import an Excel File.

Please see the below code. Its works fine for all text and numeric Columns. But by importing a DATE formated column in Excel (birthdate) , Iam facing the below issue as result:

Modern SQL engines are enormously complex pieces of software. Even when they appear stable and mature, subtle bugs can hide in their optimizers, type systems, predicate evaluation, or execution layers. These bugs rarely announce themselves loudly. Instead, they quietly produce incorrect results, behave inconsistently, or fail abruptly under specific combinations of SQL constructs.

This is precisely why tools like SQLancer exist. SQLancer automatically generates SQL queries and uses logical “oracles” to detect when a database behaves incorrectly. It has revealed hundreds of real bugs in widely used systems such as MySQL, PostgreSQL, SQLite, and DuckDB.

With this in mind, I attempted to bring SQLancer to InterSystems IRIS, starting with the NOREC oracle — a powerful method for detecting optimizer correctness issues. The journey, however, uncovered not just potential SQL correctness problems, but also a surprising number of driver-level and server-level failures that prevented SQLancer from running at full strength.

This article summarizes why SQLancer is important, how the NOREC oracle works, and what unexpected findings appeared while testing IRIS.

In some cases, it's necessary to manipulate data from one namespace to another. For example, a routine in the "N1" namespace needs data from the "N2" namespace. In legacy systems (using only globals), it's common to make the global universal, but what about persistent classes? Is this type of globalization also possible?

Hi Developers,

Following the resounding success of last year's new contest, we decided to repeat it. Please welcome

🏆 Bringing Ideas to Reality Contest 🏆

Submit an application that implements an idea from the InterSystems Ideas Portal that has status Community Opportunity or Future Consideration, created before the publication of this announcement, and requires doing the actual programming 😉

Duration: November 17 - December 7, 2025 December 14, 2025 (the submission period extended until December 7)

Prize pool: $12,000

Hey Community,

It's time for the new batch of #KeyQuestions from the previous month.

Project Overview / Introduction

Developing and testing REST APIs in InterSystems IRIS often requires a significant amount of boilerplate code. While ObjectScript provides powerful tools for building APIs, writing consistent and repeatable tests can be time‑consuming. This is where IrisOASTestGen comes in.

Hey Community!

We're happy to share a new video from our InterSystems Developers YouTube:

⏯ Smarter Table Statistics @ Ready 2025

https://www.youtube.com/embed/k7cOSuydwHI
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Could someone explain how and why a HL7 ACK be showing up as a Orphaned message when I run the following SQL...

Access IRIS Terminal Session using WebTerminal. I noticed that the $P or $PRINCIPAL system variable is defined as //./nul

When logging into Terminal via Management Portal, $P = |TRM||$J

Because of this, we cannot get into Programmers Mode via ^%SYS.PMODE

Any ideas?

There are a select few in the group that have been using Github as a Local Client push to a Repository setup in GitHub. Questions were brought up today about the security, and possible issues when it comes to data being pushed in this method.

Looking over code we have noticed that there is Histogram data within some of the class files that could be considered a security issue. Does anyone else have concerns with the Histogram data being within the class files pushed up to github?