Explanation:
Serverless SQL warehouses in Databricks differ from Classic SQL warehouses primarily through their rapid elasticity. Because Databricks manages a fleet of warm compute instances behind the scenes, serverless warehouses can scale up almost instantly to handle concurrent demand and scale down to zero almost immediately when idle. This removes the slow startup times and long idle auto-stop wait times associated with Classic compute.
Ultimate access to all questions.
A
It scales down to zero instantly when idle and scales up instantly on demand.
B
Users manually assign extra nodes when slow.
C
It scales vertically by adding RAM to a single node.
D
It has a fixed size to guarantee costs.
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