navinkumar

@navinkumar05

Data Engineer

India, ChennaiJoined January 2024

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A passionate data engineer skilled in ETL, Data warehousing, SQL, Python, Docker & Kubernetes and more. Follow my blog for tech insights!

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navinkumar's blogs

📒 Notes123notes123.hashnode.dev19 posts

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Nnavinkumarnotes123.hashnode.devNov 29, 2025 · 2 min read

Data Engineering Roadmap

Introduction Many people step out of the Data Engineering learning journey because everything feels confusing, slow, and overwhelming. But the real problem isn’t the tools, it’s the lack of a clear purpose and a clear path. To solve this problem, I c...

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Nnavinkumarnotes123.hashnode.devNov 28, 2024 · 1 min read

Incremental Load in Data bricks part -1

Use cases Suitable if the pipeline runs infrequently. Assume the scenario if files are loaded in same directory everyday. If not used processed and yet to process folder. Steps to implement List the current files in directory create database if...

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Nnavinkumarnotes123.hashnode.devJul 14, 2024 · 4 min read

List comprehension vs Generator expression

syntax List comprehension [expression for item in iterable if condition] Generator expression (expression for item in iterable if condition) only difference is [] & () How Generator Expression Works: Initialization: When you create a generator...

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Nnavinkumarnotes123.hashnode.devJul 9, 2024 · 1 min read

connect Postgres SQL in python

Pre-requisites: Postgres database Python step -1 pip install psycopg2-binary step -2 postgres credentials host='localhost' dbname='practice_db' username='postgres' password=123456 port=5432 step -3 import the pscopg2 module and use the connect ...

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Nnavinkumarnotes123.hashnode.devJun 1, 2024 · 2 min read

Java JDBC

package jdbc; import java.sql.*; public class PostgreSQLCRUDExample { // JDBC URL, username, and password static final String JDBC_URL = "jdbc:postgresql://localhost:5432/practicedb"; static final String USERNAME = "postgres"; static...

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navinkumar

About

Available for

navinkumar's blogs

Recently published

Data Engineering Roadmap

Incremental Load in Data bricks part -1

List comprehension vs Generator expression

connect Postgres SQL in python

Java JDBC

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navinkumar

About

Available for

navinkumar's blogs

Recently published

Data Engineering Roadmap

Incremental Load in Data bricks part -1

List comprehension vs Generator expression

connect Postgres SQL in python

Java JDBC