SQL NO SQL Java

C C++ Python Java Linux

Python Java JavaScript REST GraphQL

TCP/IP DNS DHCP VPN SMTP e-mail relay servers

Apache Spark PySpark Kafka RDBMS DB Hadoop

TCP/IP HTTP SOAP RESTful APIs XML/JSON

Spark-SQL Scala Spark SQL Hive

TCP/IP DNS QoS SIP Windows Server

Java PERL BASH Python Linux

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Python SQL concepts Hadoop Spark / Hive RESTful web services

SAP CRM TPM S4 Hana SD Integration

frameworks Angular Node.js Express scrum

Firewall rules DNA Windows Linux VMware

Visual Studio C# ASP.NET MVC/Core .NET Framework