# ScyllaDB Data Modeling

> CQL schema, partition keys, query-first design

**Subcategory:** ScyllaDB  
**License:** Apache-2.0  
**Source:** https://github.com/scylladb/agent-skills/blob/main/skills/scylladb-data-modeling/SKILL.md

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## When it is useful

CQL schema / partition+clustering keys, query-first design, ALLOW FILTERING, hot partitions.

## The Catch

Scylla CQL, not Yugabyte ycql and not vanilla Cassandra. False-fires on generic schema design. Distinct from AY ycql (no ACID global indexes story). Skills Apache-2.0; Enterprise is source-available (OSS AGPL 6.2.x frozen).