Before you take a technology learning decision ask following questions
Would you have greater chance of success learning a single technology / language like Python / Java or would you rather learn a full technology track which would help you deliver real life projects?
What skills are required to work as bigdata engineer, data analyst and data scientist?
First step is to understand the learning track to start working as a data engineer or data analyst or data scientist – though technology stack could change but core concepts would remain the same.
For example Data engineer could typically start withData Structures +Java + HDFS + MR + Pig + Hive + Kafka + NiFi + Scala + Spark + JavaScript + NoSQL databases + Data Integration and transformation
Whereas Data scientist could typically start with Algebra + Statistics + Analytical techniques + Python + R + TensorFlow + Artificial Intelligence + Deep learning + Spark
Add to these few common skills like Cloud + Devops
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