nrowobject
nrowobject is a lightweight data type used in data processing frameworks to encapsulate the concept of a dataset's row count. It emphasizes a single numeric quantity while possibly carrying metadata about how the count was obtained, such as whether it is exact or estimated.
Design and representation: An nrowobject typically stores an integer count and may include flags for estimation,
Usage: nrowobject is passed between components to report results, validate input sizes, or drive sampling and
Implementation notes: Because row counts can be large, implementations use 64-bit integers in most environments. If
See also: row count, cardinality, data schema, metadata in data processing, lazy evaluation.