# Building an ItemCF Recommender in Pure SQL

> Five minutes, PostgreSQL, and the MovieLens dataset—that’s all you need to implement a classic item-based collaborative filtering recommender.

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LLMS index: [llms.txt](/llms.txt)

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[![featured](/img/hero/pg/pg-recsys.jpg)](https://vonng.com/en/pg/pg-recsys/)

Five minutes, PostgreSQL, and the MovieLens dataset—that’s all you need to implement a classic item-based collaborative filtering recommender. [**Read more**](https://vonng.com/en/pg/pg-recsys/)