Every new smart water meter adds device tags, interval series, and location attributes until the utilities “source catalog” is unmanageable. What source-management problem is the city facing?
Select an answer to reveal the explanation.
Short Explanation
One meter is a trickle; a whole fleet is a fire hose of tags and intervals. That cardinality blast grows volume and variety until the catalog needs real governance. It is not a CAP trivia quiz or a spreadsheet hobby.
Full Explanation
Machine-to-machine fleets multiply identifiers, metrics, and schemas as devices scale. Source catalogs, naming standards, and retention rules become necessary so analysts can find and trust streams. Treating meters as a single workbook or denying M2M variety misses how telemetry drives Big Data source complexity. Governance of cardinality keeps the catalog usable as volume and variety climb.