What are the basic differences between relational database and HDFS?

Answer 1

I don't know about HDFS, but I know how doing a google search, so maybe this link could answer to you:

https://www.qubole.com/blog/hadoop-vs-traditional/

Answer 2

please what is HDFS?

Answer 3

https://hadoop.apache.org/docs/stable/hadoop-project-dist/hadoop-hdfs/HdfsUserGuide.html

Answer 4

From quick over looking it, HDFS is mainly for file storage and there is your different.

RDB you save your ‘objects’ in tables as descriptive as possible with basic data types.
But saving big data like a file, is not really part of the idea. So RDB aren’t really optimized or efficient for that.

HDFS use a different approach and are optimized for large scale file saving/finding/retrieving.

Answer 5

Hadoop is java framework under apache lisence. Using technology MapReduce for handle BigData with high performance.

maybe you can't put big files in 1 record table.

That's why hadoop was born & created.

HDFS (Hadoop Distribution File System) is a part of the Hadoop Technology.