Author: Lucas Jellema
The combination of GeoJSON data sets and the JavaScript d3.js for SVG visualizations is quite valuable for creating rich and interactive visualizations of data that is related to geography …
In several recent articles on Data Visualization using a Thematic World Map with color shades assigned to countries based on their value for a specific property in a world …
In two earlier articles I have discussed how to create a data visualization through a world map showing countries colored in shades representing their value for a selected property. …
This article is a sequel to my introduction into World Map visualization (using d3, SVG and JavaScript). The previous article introduced the visualization of country specific data on a …
Data associated with countries is fairly common. Presenting such data in the form of world map that shows the countries and presents the associated data through a color is …
B2b, B2C, Application-2-Application integration – I have been active in data integration scenarios for many years. Typically real time, high volume and increasingly asynchronous. And virtually always fully automated. …
Just over three weeks ago, a colleague told me about The Advent of Code 2023. She explained how for 8 years every year in days and weeks leading up …
The production database is the holy grail of any organisation or at least any microservice or business application. The data and the current structures and definitions of the database …
I have created a tutorial “Building a web application with Vue”. You will find it here in a GitHub Repo. It is targeted at people who – like me …
If I had not seen it, I doubt I would have believed it. If you click this link you will open a StackBlitz workspace right in your browser. You …
Ik maak met enthousiasme gebruik van OV9292. Ik geef aan waar ik wil zijn en waarvandaan ik ga reizen. Ik geef aan hoe laat ik wil vertrekken of aankomen. …
Speaker: Lucas Jellema (four weeks of Vue3 experience)Language for this session: EnglishDate: Tuesday 22nd AugustTime: 17.00-20.30 CET Location: Conclusion Utrecht, Herculesplein 80, 16th floor / Digital via Teams Target …
I started web development in the ’90s. Plain HTML and JavaScript, some images and perhaps a little bit of CSS. Static websites. I have made quite a journey since …
Dit is een verhaal over mijn ervaringen als klant van een leasemaatschappij. Of misschien als belanghebbende (want mijn werkgever is de klant). Een verhaal op twee niveaus: de klantervaring …
Platys is a tool created by Guido Schmutz, architect and data specialist at Accenture and frequent teacher at various universities. In order to be able to quickly create an …
That is a long title. In this article, I introduce a Gitpod workspace (cloud based ephemeral development environment) in which you can try out NocoDB – an open source …
Click on a button- or this link. Wait about four to five minutes. You will have access to a free cloud based environment with a three-broker-node Apache Kafka Cluster, …
The core Formula One data could be represented in a graph like this: Drivers compete in races that are hosted on circuits. A result is achieved by the driver …
I bet you are used to relational data structures that you query using SQL. And so do I. And there is nothing in terms of data that a good …
My fellow Oracle ACE Directors and former AMIS-colleagues Patrick Barel and Alex Nuijten have co-authored an impressive book: The book discusses many of the wonders of SQL and PL/SQL …
In an earlier article, I showed how to quickly get going with an Oracle Database 23c Free instance in a Gitpod workspace – cloud based, ephemeral, quick start, zero …
This should surprise if not baffle you. Session 1 inserts a record and commits it. Session 1 performs an update on this record. And does not yet commit its …
A new major Oracle Database release is a special occasion. I joined Oracle in May 1994 just after the Oracle7 release (December 1993) although I worked with Oracle6 for …
Op maandag 20 maart vindt weer een Code Café plaats waarin we tools en technologie bespreken en uitproberen. Tussen 17 en 20.30 staan drie onderwerpen op de agenda, eten …
I am not normally a cynic. I trust people’s good intentions. However, I am a little suspicious when an argument in favor or against a specific way of doing …
I have written about Steampipe before. And I have stated how much I like this idea of using SQL to access data on cloud resources (and many other types …
In addition to the OCI Console, there are many ways to inspect the status of Oracle Cloud resources – including the OCI CLI, Terraform, Grafana OCI Plugin, REST API, …
Apache Superset is an open source end user tool for analyzing and visualizing data. Dozens of chart types are available out of the box, dashboards can be created, finetuned …
Apache Superset is an open source platform for data exploration and visualization. It can be described as an open, free alternative for Microsoft PowerBI, Tableau, Qlik and Oracle Analytics …
Oracle Cloud Infrastructure DevOps is a service I have written about on several occasions. The OCI DevOps service provides an Artifact Repository, Git Code repositories, Build Pipelines and Deployment …
Triggered by an assignment my son had to do for one of his university courses – and given the fairly light weight laptop we have him work with – …
ChatGPT is a bit of a “tongue twister” so I will speak of Cheppy. AMIS has a long history of spotting, exploring, embracing and rolling out new concepts and …
The best solution may not be the best solution. Depending on the scope in which you consider the alternatives, you may arrive at the wrong conclusion. Consider only the …
Go – sometimes Golang because internet searching for just “go” is quite impossible – is a popular programming language. It was initially launched in 2012 and as been gaining …
OCI Functions are powerful components in a cloud native world. Triggered by events and direct requests, these functions are engaged to perform a specific task. Which could be almost …
“Can we let go of that office building?” (we pay rent, utilities, furniture – is that still necessary or justified) “Well, I believe Chris is still making use of …
Some of the data used by Terraform to create cloud resources is sensitive and should not be stored in plain text in source code repositories. Examples are passwords, client …
This article describes how a Terraform plan can read configuration data at plan and application time from local or remote JSON documents to provide dynamic, easily and centrally maintainable …
Terraform is used for automated provisioning of resource on Oracle Cloud Infrastructure. Resources are defined in HCL – the DSL used in Terraform for describing infrastructure – and these …
Terraform is the tool of choice for automated provisioning of cloud resources on Oracle Cloud Infrastructure (IaC). In two recent articles, I have demonstrated how to create a plan …
