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nosql does not imply no schema

I think most would infer that, but in any case, it most definitely implies a non-rigid schema.

Cassandra et al. IMO only fall under the NoSQL banner by retconning the meaning to be “Not Only SQL.” Columnar DBs are a fine idea for certain uses.

Document DBs and/or chucking everything into a JSON column, though… those can die in a fire.

the only thing nosql means is that there are no relations. mongodb 8 and newer for example support schemas and validations, cascading checks, etc. dynamodb, more relevantly does also support a schema, and in fact you can't even create a table without defining one.

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