Data base

Python 2 mySQL 2 Data science 2 Linux (Kernel) 2

Java 4 Spring Boot 4 PostgreSQL 3 ArangoDB 1

Java 4 Web development 3 Webservices 3 Data base development 4

Software engineering / -technology 3 Data analysis 4 SQL 4 Microsoft Power BI 4

Delphi 10 Python 1 RDB / RDBMS 10 C++ 2