Whenever you're ready, walk me through how you'd approach this.
Explain the trade-offs you consider when choosing a database for a new service, comparing SQL and NoSQL options.
Discuss how data shape, relationships, consistency, transaction requirements, query patterns, scale, latency, availability, operational burden, and cost affect the decision. Explain what clarifying questions you would ask, how you would validate the choice, and how you would plan for future migration or changing access patterns.