---
title: "Discussion on \"I Thought I Understood Databases — Then I Built One Properly\" | Hashnode"
description: "Discussion on \"I Thought I Understood Databases — Then I Built One Properly\". I thought I understood databases.\nI had written SQL queries, built tables, and used them in projects. But everything I knew was limited to querying data - not managing it.\nSo I decided to build a comp"
url: "https://hashnode.com/posts/i-thought-i-understood-databases-then-i-built-one-properly/69df58f2fd38c9c1748e3236"
---

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# [I Thought I Understood Databases — Then I Built One Properly](https://andreaparisdata.hashnode.dev/i-thought-i-understood-databases-then-i-built-one-properly?utm_source=hashnode&utm_medium=feed)

I thought I understood databases. I had written SQL queries, built tables, and used them in projects. But everything I knew was limited to querying data - not managing it. So I decided to build a comp

Apr 15 · 5 min read · andreaparisdata.hashnode.dev  
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-   [#postgresql](https://hashnode.com/tag/postgresql)
-   [#databases](https://hashnode.com/tag/databases)
-   [#data-engineering](https://hashnode.com/tag/data-engineering)
-   [#learning-in-public](https://hashnode.com/tag/learning-in-public)
-   [#sql](https://hashnode.com/tag/sql)
-   [#database-design](https://hashnode.com/tag/database-design)

## Written by

[Andrea Paris](https://hashnode.com/@andreaparisdata)

@andreaparisdata · London, UK

  
[View profile](https://hashnode.com/@andreaparisdata)

Building data systems with Python, SQL, and automated pipelines.

Chemistry PhD transitioning into data engineering. Building data systems with Python, SQL, and end-to-end pipelines, while exploring databases, analytics, and data workflows.

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