What is TrainDB?
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TrainDB is an ML-model based approximate DBMS query engine that provides approximate but accurate enough query results based on machine learning models in order to support exploratory data analysis for timely business decision-making.

.. image:: ../_static/img/concept.png
  :alt: TrainDB Concept

TrainDB's key features are as follows:

* Providing approximate query results without access to base tables after ML model training
* ML model training/serving with remote ML model serving framework
* Various DBMS data sources support