Dnsvault overview data analytic

 Part of data scientist skill sets are:

1. Programming
2. SQL / Database programming and database administration
3. Data Visualization
4. Unstructured data manipulation

ref:
https://www.kdnuggets.com/2018/05/simplilearn-9-must-have-skills-data-scientist.html
https://blog.udacity.com/2014/11/data-science-job-skills.html

dibawah adalah group ranked data.
saya menggunakan window query untuk dapatkan top rank every category.

ref:
https://medium.com/@amulya349/how-to-select-top-n-rows-from-each-category-in-postgresql-39e3cfebb020
https://www.postgresqltutorial.com/postgresql-window-function/







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