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SESK: Stuff Everyone Should Know · sesk.info/tech-nosql-flexible-schema

What is a common difference between NoSQL and relational databases?

NoSQL often uses flexible schemas and non-tabular data models.

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  1. NoSQL databases cannot store text
  2. NoSQL often uses flexible, non-tabular schemas ✔
  3. NoSQL databases cannot query data

Why: Relational databases usually organize data in tables with defined columns. NoSQL systems use models such as documents, key-value pairs and graphs, and they generally allow more flexible schemas.

Huh, didn't know that: Document, key-value and graph databases are three different NoSQL data models.

The dad joke
My NoSQL database has a flexible schema. It is basically the yoga instructor of data.
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References

Answer: NoSQL often uses flexible, non-tabular schemas. Relational databases usually organize data in tables with defined columns. NoSQL systems use models such as documents, key-value pairs and graphs, and they generally allow more flexible schemas.

  1. AWS: What is NoSQL? aws.amazon.com/nosql
    designed for specific data models and stores data in flexible schemas
    Checked 2026-10-10.

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