Does Nasdaq Data Link maintain a schema registry (i.e. a confluent schema registry)?

Nasdaq Data Link Streaming does not maintain a schema registry, but does maintain schemas in the control topic. At the start of each market day, we push the schema for the data feeds from the `StreamInitiated` message to the control topic. You can maintain your schema registry by reading data from the control topic. Schemas rarely update – generally once every few years. 

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