About collections with the Data API

Collections store documents in Serverless (Vector) databases. Collections are best for cases where your data isn’t fully structured, or where you don’t want to use a fixed schema. If your data is fully structured and you want to use a fixed schema, use tables instead.

Serverless (Vector) databases created after June 24, 2024 can have approximately 10 collections. Databases created before this date can have approximately 5 collections. The collection limit is based on the number of indexes.