C++ python MySQL Oracle MongoDB

MySQL Hadoop MongoDB AWS Azure

Java Spring framework Oracle SQL Server MySQL

PL/SQL Oracle MongoDB SQL Toad

Oracle MySQL No SQL Graph Mongo

Java JavaScript Angular HTML Spring

HDFS Cassandra MySQL Microsoft Oracle

MySQL Postgres Redshift etc chef

Azure Integration Services SQL MySQL

(MapReduce Yarn MySQL PostgreSQL SqlServer

C/C++ Java JEE Weblogic SQL

C/C++ Unix/Linux Windows environments Java/J2EE Sybase

HTML CSS Java Spring Boot Java EE

MapReduce HDFS Spark Presto HBase

UI frameworks libs PostgreSQL MySQL MongoDB