cing application might have stored the data in a relational database. One consumer might then want to use this data and serve it with a REST API. Another consumer perhaps wants to emit messages containing this data to a queue when a certain event occurs. Of course it doesn&#8217;t end there. The data might be consumed even further, and undergo various more transformations.</p>
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<p>Each time the data is transformed, software and data engineers need to define schemas for the tech