A hospital administrator wants real-time ED wait ×. Which database?

Data warehouses are optimized for analytical queries and reporting rather than real-time transaction processing. They aggregate historical data and are not designed to handle the frequent updates required for real-time monitoring of ED wait times. Thus, they are not suitable for applications needing immediate data accuracy.

While relational databases can support real-time data retrieval, they do not inherently guarantee the performance needed for high-velocity transactional environments. Transactional databases, which are a subtype of relational databases, are specifically optimized for handling numerous concurrent transactions and ensuring data consistency in real time, making them preferable for this scenario.

Registries are typically used to store specific types of data, such as patient records or disease registries, rather than to manage real-time transaction data. They may not be structured for rapid updates or immediate feedback on current ED wait times, thus lacking the responsiveness required for effective real-time monitoring.