If you're building a modern data stack that requires either high-throughput transaction processing or large-scale analytical workloads, you've likely come across both Vertica and VoltDB (now rebranded as Volt Active Data). While both are distributed relational database management systems (RDBMS), they are architected for completely opposite use cases — choosing the wrong one can lead to 10x higher costs, missed latency SLAs, and poor application performance. In this guide, we break down every ke