InterSystems IRIS is built on an architecture that separates the logical organization of data (namespaces) from its physical storage location (databases). Understanding this separation and the distinction between Namespaces and Databases is crucial for effective data management, security, and especially, high-performance data sharing.

In this article, I will discuss these foundational components and provide a practical guide on leveraging global mappings to share native data structures (globals) across different logical environments.

Databases: Physical Reality

A database represents the physical reality of where the data is stored on the disk. First and foremost, it’s a file in a file system called IRIS.dat (e.g., <Install folder>\mgr\user\IRIS.DAT). The maximum size of this file is 32TB. It is the container for all the actual data and the code. Databases are managed by the IRIS kernel, which handles caching, journaling, and transaction logging at the physical file level.

When you install InterSystems IRIS DBMS, the following databases are installed automatically:

One of the newest features of .Net core 10 with C# 14 is the file-based apps. This feature allows you to execute C# code in a simple .cs file without the need to create a solution, a project, or any of the related structure.

For example you can create a script.cs file using the notepad with the content:

Console.WriteLine(“This is a script in c#.”);

Then in the command line or the terminal you execute the command:

Hey! November Article Bounty is live on Global Masters! 🍁🚀

Share your expertise by writing a brand-new article on one of the topics and get 🏆 5,000 points when it’s approved! 🎉

Here’s the list of October topics:

Why Randomization is Key When Splitting Data for Machine Learning

Post:
Essentially, Machine Learning is about learning from data. Having "good" data leads to better models, and more importantly, the quality of the information being used plays a crucial role in improving prediction accuracy.

I am trying to centralize our FHIR queries into a single BP object that would send the FHIR query to the EMR, interpret the response into a %Persistent structure that could be sent back to the requestor. In theory it seemed like it would work but I am running into an issue..

Hi all,

Does anyone know of a way to make Ens.ScheduleHandler alert on error?

Cheers,

Otto

Hey Community!

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

⏯ Query Optimization in Hybrid Databases @ Ready 2025

https://www.youtube.com/embed/_BNTGEsDt48
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Hi, Community!

If you need to help providers meet a payer's documentation requirements, see how the Documentation Templates and Rules (DTR) module of the InterSystems Payer Services ePrior Authorization solution can help:

Documentation Templates and Rules

https://www.youtube.com/embed/SKZ_pz6GkUY?utm_source=youtube&utm_medium=social&utm_campaign=SKZ_pz6GkUY
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We are using IRIS with a sharded architecture. Complex SQL queries (with joins, aggregates, and subqueries) are performing slowly. How can I design queries or indexes to optimize distributed execution across shards?

I still remember the very first code I wrote in Object Script

Coming from Python, it felt so strange at first, but over time I started to see why the language was built the way it is.

If you’re just starting out, keep in mind that ObjectScript might feel a bit niche and mostly tied to IRIS products, but the way you work with it can really pay off - fast development, a powerful database, and a solid platform to learn on.

Sometimes it feels like you’ve stepped into a world that’s both familiar and different.

..Contains(source.{ORCgrp(x1).OBRuniongrp.NTEi2(x2):Comment(x3)},"(")&&..Matches(source.{ORCgrp(x1).OBRuniongrp.NTEi2(x2):Comment(x3)},"^[A-Z][0-9][0-9]$")

I want to do this to match strings such as X98. Community AI tells me this is correct but I get an error in testing. Specifically, this is the part causing the error;
..Matches(source.{ORCgrp(x1).OBRuniongrp.NTEi2(x2):Comment(x3)},"^[A-Z][0-9][0-9]$")

What do I need to change?

Join us on Thursday to see the new features of Deltanji source control, version 8.1.

We'll be demoing our new Git Location Driver along with other functionality and usability improvements.

The Git Location Driver enables Deltanji to integrate directly with Git repositories, makes Deltanji the perfect source control companion to those who use Git-based repos by providing tighter integration with InterSystems IRIS.

HealthShare Patient Index – Virtual February 19-21, 2025 9:00am-5:00pm US-Eastern Time (EST)

If one of your packages on OEX receives a review, you get notified by OEX only of YOUR own package.
The rating reflects the experience of the reviewer with the status found at the time of review.
It is kind of a snapshot and might have changed meanwhile.
Reviews by other members of the community are marked by * in the last column.