Discovery Guide > Using and Configuring Discovery > Reindexing and Rediscovering a Data Source
 
Reindexing and Rediscovering a Data Source
If you make changes to a data source that you want to appear in a Discovery model, you need to reindex and rediscover relationships in that data source.
When you re-index or re-discover relationships, the old relationships for the same data source are overwritten.
To reindex an entire data source, follow the steps in Indexing and Discovering a Data Source, and then refresh the model for the changes to take effect.
To reindex selected resources, follow the steps in Indexing and Discovering Relationships Across Data Sources, and then refresh the model for the changes to take effect.