I will add to that... are there any benchmarks about performance reading from relational databases? We have some tables with hundreds of gigabytes to a few terabytes and we are wondering how meltano would perform in an scenario like that.

It’s all up to the specific tap and target. Meltano is not moving data. It’s invoking singer taps and targets. So the question is, what relational db? And to what target? I built a bigquery target that is pretty fast 🏎️ so it can be done.

Thank you for your response. Yes, that's what I thought