Databanks (Oracle, MySQL, PostgreSQL, u.a.) - Server Systems (Microsoft, Linux, Novell, HP-UX, Citrix, u.a.)
- Client Systems (Microsoft, Linux, u.a.)
- Network Technology (Cisco, Linux, u.a.)
- Internet/Security (Checkpoint, Kaspersky, HB EDV, Linux, u.a.)
- Project management (Network, Security, Software development, Ortganisation)
- Infrastructure (Telephone Systems, Cable Systems)
- Hardware (Handel)
- Programming (Oracle, PHP, .NET, Java, Konrad, VB, VBA)
- Analysis (UML)
- Software-User-Coaching
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