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Enforce a Schema

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You can control the shape and contents of documents in a collection by defining a schema. Schemas let you require specific fields, control the type of a field's value, and validate changes before committing write operations.

This guide shows you how to define, configure, and deploy a schema for a linked MongoDB Atlas collection.

Note
Data Lakes Do Not Support Schemas

Data Lake data sources do not support schema validation or data access rules. You can only access a Data Lake data source in a system function.

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