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Definitions (metadata) refer to the structure of tables that manage data in Microsoft Dataverse. MetadataBase is the base class for classes that contain definition information. This section describes how to programmatically access and modify the definition model by using the SDK for .NET.
Important
Adding, removing, or changing tables, alternate keys, columns, or relationships can interfere with normal system operation. If you're applying changes to a production system, schedule these operations when they're least disruptive to users.
See also
Use the Web API with metadata
Work with table definitions using code