#Databases

In this article, we will cover below topics:

• What is Kubernetes?
• Main Kubernetes (K8s) Components

What is Kubernetes?

Kubernetes is an open-source container orchestration framework developed by Google. In essence, it controls container speed and helps you manage applications consisting of multiple containers. Additionally, it allows you to operate them in different environments, e.g., physical machines, virtual machines, Cloud environments, or even hybrid deployment environments.

What problems does it solve?

The emergence of containerization in microservices technology has given rise to

Hello everyone,
I searched but didn't find anything. Could you tell me if the IRIS database has any class that natively works with blockchains?
Best Regards,
Flávio

I have some databases in my cache instance that were created from an online backup file (.cbk). I would like to see the information for these databases in the Databases and SQL sections of Management Portal, but they only appear in the Classes section. I can navigate to the files in my cache instance terminal and see the CACHE.DAT files, and a check in the terminal shows that they are mounted.
This is what I see in the terminal for each database when I check to see if the databases are mounted:
%SYS>set db="/path/for/mydatabase"
%SYS>w ##class(SYS.Database).%OpenId(db).Mounted

Hi community,

We have a developed a new version of a production, all the code is new and has changed BP. This application load information for some brands and stored in database.

The customer wants to implement the changes only for some brands because he wants to check for small brands before to implement for all brands.

My proposal is create a new namespace, with the new code, and disabled all load of brands except the brand that he wants to check.

I'm wondering what is the best way to clone the namespace.

My first attempt is to make a copy of the databases (data and code) of namespace 1, create

Hello, community!

Ihave been tinkering around with Flutter lately and, as a result, came up with some apps that can use Firebase as a database. When I realized there was an available Python library, I felt the urge to create something for InterSystems IRIS that would communicate with the Firebase RealTime Database and perform CRUD operations. Later, I stumbled upon the following idea from Evgeny in the portal:

https://ideas.intersystems.com/ideas/DP-I-146 

That is when  I got down to work!

Are you curious to see my findings? Then buckle up because we’re about to take off!

Yet,

It seems like yesterday when we did a small project in Java to test the performance of IRIS, PostgreSQL and MySQL (you can review the article we wrote back in June at the end of this article). If you remember, IRIS was superior to PostgreSQL and clearly superior to MySQL in insertions, with no big difference in queries.

Well, shortly after @Dmitry Maslennikov told me "Why don't you test it from a Python project?" Well, here is the Python version of the tests we previously performed using the JDBC connections.

First of all, let you know that I am not an expert in Python, so if you see anything

Good morning,

First of all thanks for your help and time.

We find ourselves at a crossroads in our development journey, and we're reaching out to the community for insights and guidance regarding a critical aspect of our data management strategy.

Our current challenge revolves around the persistence of data in Globals, specifically when it comes to purging. The issue at hand is that, despite purging, data stored in Globals under the current %Persistent classes remains intact. To address this, we are contemplating a shift from %Persistent to %SerialObject for each relevant class.

Our primary

Hello Community

IRISTEMP database consumes more disk space and make the production instance down when running Bulk SQL queries (maybe other processes aswell)

Is setting up the "Maximum" size it resolves the problem?. Is this setting impacts the performance? 

What are the approaches to resolve it

sample screenshot

Hello Community,

I got the below error while creating a new database.

Hello community, I need to solve a complex but trivial issue.

Given:

Two tables "Comment" and "Post". Each one contains an "Author" field, which is essentially a user ID. In these tables, each user ID represents an author. The goal is to count all participants together and then group them by month, language, and other metrics.

The question is how to do this within the IRIS ecosystem. Is it even possible to take two tables, get distinct data from them and then combine into one cube?

Hi,

Any examples please of connection a Delphi 11 Front end to a Cache database?

I can get it to connect but then when I try and view data it fails

4 fields in front end

SERVER = 127.0.0.1

PORT = 1972

NAMESPACE = DROP DOWN LIST (I SELECT "DEVELOP" FROM THE LIST

EDIT_CLASSNAME = Default value is Test (with maybe 3 fields just of random stuff)

procedure TFMAIN.BtnConnectClick(Sender: TObject);
 var
 ConnectString: string;
 Success: Boolean;
 Col,Row:Integer;
 FieldName:array[0..10] of string;
begin

    IF NAMESPACE.TEXT<='' THEN
     BEGIN
      SHOWMESSAGE('Please select a Namespace from the drop down

We continue with the series of articles related to the QuinielaML application. In this article we are going to cover how to prepare the raw data that we have captured using the Embedded Python functionality.

Welcome everybody!

In this article, I am demonstrating how to create a table column(formerly known as properties) with your custom datatype classes by using User defined DDL.Properties are the crucial member of the persistent class definition.Datatypes are essential to define types of values that are stored in a table column.In general, the datatype names of SQL different from Intersystems datatypes, such as VARCHAR = %String.you have the ability to create or modify a table by using these datatypes.Indeed, you’re creating the tables through DDL and you have your own datatype classes are already defined.

Before we start talking about databases and different data models that exist, first we'd better talk about what a database is and how to use it.

A database is an organized collection of data stored and accessed electronically. It is used to store and retrieve structured, semi-structured, or raw data which is often related to a theme or activity.

At the heart of every database lies at least one model used to describe its data. And depending on the model it is based on, a database may have slightly different characteristics and store different types of data.

To write, retrieve, modify, sort, transform or print the information from the database, a software called Database Management System (DBMS) is used.

The size, capacity, and performance of databases and their respective DBMS have increased by several orders of magnitude. It has been made possible by technological advances in various areas, such as processors, computer memory, computer storage, and computer networks. In general, the development of database technology can be divided into four generations based on the data models or structure: navigational, relational, object and post-relational.

Hi

I am getting below error while connecting cache from VS Code 

Authorization error: Check your credentials in Settings, and that you have sufficient privileges on the /api/atelier web application on 127.0.0.1:52773[USER]

Thanks

InterSystems FAQ rubric

You can see the free available space for the database using the radio button "Free Space View" in Management Portal: System Operation > Databases.

And it can be obtained programmatically by the FreeSpace query of the system class SYS.Database.

It sometimes happens that due to an adverse event the AUDIT database (IRISAUDIT) has grown to such proportions that the disk it resides on is full and the daily purge cannot be expected to reclaim disk space.

As IRISAUDIT is a system database required at startup, there is no question of attempting to restart IRIS after simply deleting IRIS.DAT from the <IRIS ROOT>/mgr/irisaudit/ database, nor of hot swapping, by system manipulations trying to dismount, replace, remount, since it is simply not possible to dismount it.

IRISAUDIT database: mounting required when starting IRIS

IRISAUDIT base:

Hello everybody. I have a problem a little bit strange. The thing is that there is a Task on Cache that by default is executed everyday at 4:00:00 that, with my settings, will delete all the Audit logs with more than 70 days of existence. The problem is that everyday this task is executed without an error message (status "Success" after the task is finished) but no data is cleaned, the same if I executed this particular task on the "Task Schedule" screen. I'll put here a screenshot of the message after executing the task on the "Task Schedule":

I've checked for several things on Caché

Hello guys,

I want to move a development IRIS for Health database to another server. I will do this manually for specific reasons. If I simply copy the /mgr folder along with all the files (.DAT, .GBK, etc.) and configure it in the new server, will it work?
Best regards.

Hello Everyone,

Last month, we asked for input from the IRIS community regarding exam topics for our InterSystems IRIS SQL Specialist and Expert exams. We will close the window for providing feedback on the exam topics on Thursday, August 31st, 2023. Thus, if you would like to have your say in what topics are covered on the exam, this is your last chance!

To show our appreciation for helping us validate our exam design, we will hold a raffle where 15 survey respondents will be chosen to receive a $50 gift card.The gift card is a Tango Card that can be redeemed at any number of online retailers.

Hello,
I would like to do the following :

set name = $name(^A)
for i=1:1:10
{
    set$qsubscript(name, i) = "TEST"_i //dream code that does not work
}
set @name = ""//will create ^A("TEST1", "TEST2", "TEST3", ... , "TEST10") = ""

Unfortunately, unlike $PIECE(), $QSUBSCRIPT() is not bidirectional.

Is there a way to do what I described, in a clean way ? (something supported by the system) 

I would like to avoid :

- using a custom made solution (eg: appending keys one by one to a string, adding commas when needed) unless it's failproof (eg: can deal with commas in keys, non string keys, ...)
-

Hi!

Currently, I'm working on a script using %SYS.Journal API.

My journal files are compressed, following the documentation the compression is zstd.

I tried to unzip a file with zstd tool, ex: 

apt-get update
apt-get install zstd

zstd -d 20230806.001z -o 20230806.001

20230806.001z        : 92.03%   (909312 => 836859 bytes, 20230806.001) 

Unfortunately, the unzipped file is invalid:

Write##class(%SYS.Journal.File).IsValidJournal("/usr/irissys/mgr/journal/20230806.001")

I have several 1GB journals from a LIVE server that I would like to inspect (eg: check which globals have been updated over the time).

Is there a simple way to view those journals using another IRIS instance ? (eg: local installation).

I have been tempted to put those files directly into the journal folder of my local installation and restart the system, however I am concerned that the transactions they contains will be restored and will corrupt the local database.

I have checked documentation but couldn't find anything.

Hello Everyone,

The Certification Team of InterSystems Learning Services is in the process of developing two exams focused on using SQL in InterSystems IRIS and we need input from our InterSystems IRIS SQL community. Your input will be used to evaluate and establish the contents of the exam.

How do I provide my input? We will present you with a list of job tasks, and you will rate them on their importance as well as other factors.

How much effort is involved? It takes about 20-30 minutes to fill out each survey.You can be anonymous or identify yourself and ask us to get back to you.

We are trying to come up with huge DataStore which needs to store HIPAA transactions and Data getting partitioned with idkey - YYYYMM.  Current Live data get inserted into current Month DB -  HIPAA_202306. 10 years (Hipaa retention policy) old data is going to be sitting in to 120 DBs ( 201606_HIPAA, 201607... 202305) for historical audit legal compliance purposes.

Currently if we create Namespace we get 2 databases - CODEDB for routes/classes & DATADB for journals data.  

In our requirement, Global mapping should point to 120 DataDbs. How would we Map/design this using Globals. 

Really

I'm trying to mount a database but it says the following error: ERROR #86: the database default collations is not available

As a former JAVA developer it has always been a challenge to decide which database was the most suitable for the project we were going to develop, one of the main criteria I used was their performance, as well as their HA configuration capabilities ( high availability). Well, now is the time to put IRIS to the test with respect to some of the most commonly used databases, so I've decided to create a small Java project based on SpringBoot that connects via JDBC with a MySQL database, another of PostgreSQL and finally with IRIS.

We are going to take advantage of the fact that we have Docker

Dear experts,

Please, how can I estimated completion time for backups and restores. Is there a script to run and estimated that time?
Thank you so much.

Is anyone like me, and felt really jealous that they didn't have enough points to acquire the IRIS-based Raspberry Pi system when it was offered? Do you have a spare Raspberry Pi 4 handy? If so, I'll walk you through setting up Docker and IRIS on your Raspberry Pi so you can have the smallest IRIS computer in town!

Things you'll need:

Raspberry Pi 4 (at least 4G RAM, but I have several with 8G so that's what I used. 2G RAM *might* work, but there might be a lot of swap file activity which would slow down the process considerably)
MicroSD card (at least 16G, but I'd recommend 32G or more)
Power

Hello,

Could someone help me with a solution, for example "dump" to IRIS.DAT, I mention that it is difficult to manipulate a file of ~ 200 GB. I would be interested in generating an IRIS.DAT file containing the "schema" without any information.

Thanks !