Cleaning and Structuring Excel Data for Reliable SQL INSERTs
Moving data from Excel spreadsheets to a SQL database often seems like a straightforward task. You have your data in rows and columns, and you need…
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How I Cleaned Messy HR Dataset Using PostgreSQL: A Step-by-Step Guide
Introduction At first glance, I realized that the HR dataset was an absolute nightmare. The dataset was characterized by spelling errors, missing va…
You Don't Need a Math PhD for Data Science — You Need to Stop Skipping the Boring Step
Ask someone switching into data science what worries them and it's almost always the same thing: do I know enough math? So they spend weeks on gradi…
How Excel is Used in Real-World Data Analysis
Before this week, I thought Excel was just a fancy calculator with boxes. But after three days of my Data Science & Analytics course, I realise…