IT Knowledge

Databases

Field of knowledgeExpierenceLast used
SQL (Oracle, DB2, SQL Server, TeraData, PostgreSQL, CockroachDB, MySQL, ODBC, ANSI) 31 years Today 
PostgreSQL 6 years Today 
Azure PostgreSQL Flexible server 2 years 2026 
Amazon AWS RDS Aurora, PostgreSQL & MySQL setup and use of the database 3 years 2023 
CockroachDB Usability research 2023 
MS SQL Server Database Engine 11 years 2023 
Oracle Database Engine 11 years 2015 
DB/2 Cross platform  15 years 2010 
Transact-SQL 11 years 2024 
PL/SQL (Oracle, simple procedures) 3 years 2015

Business Intelligence

Field of knowledgeExpierenceLast used
Business Intelligence29 years Today 
Veeva CRM Database-side ½ year 2019 
Tableau ½ year 2019 
Microsoft PowerBI 1 year 2017 
Oracle Business Intelligence Enterprise Edition ½  year 2015 
Pentaho Business Analytics  1 jaar 2013 
Business Objects 2 years 2010 
Data Vault 5 years 2017 
MS SQL Server BI Suite (SSIS, SSAS) 5 years 2017 
Informatica PowerMart / PowerCenter 11 years 2015

Various

Field of knowledgeExpierenceLast used
Kubernetes 2 years 2026 
Grafana 2 years 2026 
albertoadonato/query-exporter 2 years 2026 
Github 2 years 2026 
Open Telemetry 2 years 2023 
Docker: setup, run and monitor a simple container on a Linux environment ½ year 2023 
Scrum / Agile Programming 8 years Today 
Trello 2 jaar Today 
Various programming languages 4 jaar 2010 
AIX, HP-Unix, Linux (in particular Ubuntu, AWS Linux, CentOS, Mandriva en openSUSE) 19 years Today 
Mac OS 12 years Today 
Microsoft Windows / MS-Dos 31 years Today 
MVS / TSO / OS390 / JCL / ISPF 8 years 1998 
Java EE & SE 1 year 2010 
Groovy / Grails Framework 1 year 2010 
Turbo Pascal 3 years 1992